US ($)
PE100864

Phase Eight

Lia Trousers

£30 Was £75
Colour: Black
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Size Guide

Size Bust Waist Hips
6 78 61 88
8 83 66 93
10 88 71 98
12 93 76 103
14 98 81 108
16 103 86 113
18 108 91 118
20 117 101 126
22 124 108 132
24 130 118 139
26 137 125 146
XS 6/8 78-83 61-66 88-93
S 8/10 83-88 66-71 93-89
M 12/14 93-98 76-81 103-108
L 16/18 104-109 87-92 114-119
XL 20/22 117-124 101-108 126-132
XXL 24/26 130-137 118-125 139-146
UK Size Bust Waist Hips
6 30.5 24 34.5
8 30.5/8 26 36.5/8
10 32.5/8 28 38.5/8
12 36.5/8 30 40.5
14 38.5/8 32 42.5
16 40.5 33.7/8 44.5
18 42.5 36.5/8 46.5
20 46 39.5 49.5
22 48.5 42.5 52
24 51 46.5 54.5
26 54 49 57.5
XS 6/8 30.5-32.5 24-26 34.5-36.5
S 8/10 32.5-34.5 26-28 36.5-38.5
M 12/14 36.5-38.5 30-32 40.5-42.5
L 16/18 41-43 34.5-36.5 45-46.5
XL 20/22 46-48.5 39.5-42.5 49.5-52
XXL 24/26 51-54 46.5-49 54.5-57.5
International conversions
UK/AU EU DE USA
6 34 32 2
8 36 34 4
10 38 36 6
12 40 38 8
14 42 40 10
16 44 42 12
18 46 44 14
See all charts

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A slim fitting trouser in power stretch fabric that allows for a fantastic and flattering fit.

    This is a pre-order style
    Ireland Standard Delivery
    €7
    2-3 working days
    Ireland Express Delivery
    €14
    up to 1 working day(s)
    Europe Standard Delivery
    (cost calculated at checkout)
    3-8 working days* (depending on location)
    Europe Express Delivery
    (cost calculated at checkout)
    2-5 working days* (depending on location)
    Channel Islands Standard Delivery
    £11
    Up to 4 working days
    Channel Islands Express Delivery
    £17
    Up to 2 working days
    USA Express Delivery
    $8
    1-2 working days (depending on location)
    Rest of World Delivery
    (cost calculated at checkout)
    3-9 working days (depending on location)
    Australia Express Delivery
    $20
    3-4 working days
    New Zealand Express Delivery
    $20
    3-4 working days
    Next Working Day Delivery
    £6
    Next working day (Order by 2pm Monday - Thursday)
    Evri UK Standard Delivery
    £2.95 for orders under £150
    FREE for orders over £150
    3-5
    working days
    UK Click & Collect
    FREE to all Phase Eight standalone stores
    3-5 working days
    Premium Courier DHL / DX
    £3.95
    2-3 working days
    UK Saturday Delivery
    £8
    Next Saturday (order by Friday 2pm)

    We have teamed up with Global-e – the world’s leading platform accelerating and enabling seamless shipping and delivery experience for international shoppers – which allows us to offer a fast and secure local market experience.

    We deliver to over 200 countries worldwide. To find out more, please visit our delivery page here or for more information on our returns policy vist the returns page here.

    *Saturdays, Sundays and public holidays are not considered working days.

    Terms, conditions and exceptions apply:
    Click here for our full Delivery Policy.

    FREE RETURNS Items should be returned together with your dispatch note and must be unused, in perfect condition and with their original tags and packaging.

    RETURNS

    INTERNATIONAL RETURNS

    International customers can enjoy quick and easy returns with end-to-end tracking though our partner Global E. To find out more, please visit our returns page.

    Our returns policy entitles you to a refund for item(s) bought online with a proof of purchase within 28 days of receipt.

    Terms, conditions and exceptions apply:
    Click here to read our full Refund Policy

    Customer Reviews
    (56)
    Sort By:
    Showing 5 of 56 reviews
    24 January 2019
    Good quality trousers with side zip! Marvellous. Side zip is what I look for.
    09 December 2018
    Lovely trousers shame they arrived damaged
    02 December 2018
    Have bought these before and wanted a new pair.
    25 November 2018
    A stylish slim trouser made from a heavy weight material with stretch. Ideal for work or casual wear.
    05 November 2018
    Nice material , stretchy, very comfortable
    22 October 2018
    lovely fabric. perfect fit for me
    18 October 2018
    Really like these comfortable trousers ideal for work
    08 October 2018
    These trousers have such a smooth line. Mainly because they have an unobtrusive side fastening. The material is also a good weight allowing the leg part to keep in shape.I hope more like this are made. I was so pleased with them that I now have three pairs....Two navy and one black.
    03 October 2018
    The trouser fabric feels good and is a good fit.
    19 September 2018
    not for me, they are very thick and have an odd texture inside from the fabric, also way to long for me as petite
    04 September 2018
    Pleased with fitting and look nice
    28 August 2018
    good quality and perfect fit
    01 August 2018
    Heavy fabric but although my usual phase eight trouser size, these would not do up.
    30 July 2018
    Returned as the legs were to tight and I have quite thin legs.
    26 July 2018
    Phase Eight has fantastic quality across it's range and these trousers are no exception. Really comfy, true to size, quite thick material so can be worn in cooler weather (and keeps opacity when bending!). Side zip feature adds to comfort and central seam down the legs is a lovely little design feature that makes you feel like you're not just wearing any old high street trouser.
    03 July 2018
    Lovely trousers that fit perfectly which is very rare for me!
    03 July 2018
    I ordered a size 12. They were rather stiff and didn't fit me well.
    01 July 2018
    Good fit a bit thick great for Autumn /winter
    27 June 2018
    Fantastic quality and excellent fit.
    15 June 2018
    Lovely fit with a little bit of stretch in fabric.
    09 May 2018
    ..............................
    26 April 2018
    I love these, thick fabric- side zip and covers the belly for anyone who can’t wear their trousers low . Very comfortable! And lovely detailing down the front. Will buy a second pair
    26 April 2018
    Nice Style and fitted well I liked the material
    24 April 2018
    I like the material of these trousers, they are a very useful shape and fit well. However the side fastening is annoying and the metal hook fastener at the top digs in. I'd love it if you brought back the trousers in this same material with the front fastening and the more substantial trouser hook.
    19 April 2018
    Stylish and high quality as always. Perfect fit.
    09 April 2018
    Lovely well fitting trousers with slightly heavier material than anticipated.
    08 April 2018
    I actually had size 10 and they fitted well. They are well made and good quality for a smart pair of trousers.
    03 April 2018
    Excellent quality and service
    02 April 2018
    Comfortable, flattering & a good fit.
    31 March 2018
    The quality of fabric is not good too thick and heavy. Not pleasant to wear
    30 March 2018
    Love these trousers as they have 4% elastane in which makes them super stretchy and really comfortable. The fabric is quite thick so gives some tummy control too. Leg length to ankle perfect for me - I am 5' 7". I bought a bigger size to be sure of the fit but they were too big so I had to return them. However, I did get the next size down instore.
    26 March 2018
    Were a size 12 not 18. Really good quality would order again
    25 March 2018
    Ordered a size 10 and they were a perfect fit. Good quality material and the stretch in them is great. Really comfortable and look very smart on. Great length. I will be buying more.
    23 March 2018
    The trousers are very good quality and fit well
    20 March 2018
    Size 14 Black trousers excellent product could wear smart or casual
    15 March 2018
    So comfortable, lots of Lycra so what ever your shape they fit.
    15 February 2018
    Nice fit and for once the legs are long enough. Flattering fit. love the slightly heavier material.
    30 November 2017
    So comfortable yet stylish
    30 November 2017
    Didn’t purchase I gave up
    28 November 2017
    excellent fit and accurately advertised on line
    16 November 2017
    Love these trousers, have 3 pairs now, only problem is the zip is not very strong & have had it replaced on 2 pairs of the trousers.
    22 September 2017
    Excellent fit - I'm a size 12 and 5ft 4in Nice material , should be warm in winter
    12 September 2017
    Very comfortable and smart style. Will be a most useful addition to my wardrobe.
    14 May 2017
    I wish Phase Eight would realise that many women are not pear-shaped. These trousers did not fit me because they have been made for women with large hips and thighs.
    20 March 2017
    although they were very nice unfortunately they didn't fit
    26 February 2017
    Good quality material and styling
    26 February 2017
    The trousers looked perfect, lovely fabric but unfortunately were a poor fit for me. They were fine in the legs but too long (I'm 5'6") and tight in the waist. It was also a struggle to close the zip over the waistband, so I have returned them.
    22 February 2017
    Excellent fit (I had previously tried them on in-store), good quality product.
    07 February 2017
    Would have been a very useful pair of trousers and I really wanted to be able to keep them, but unfortunately they were too baggy on the thighs.
    20 January 2017
    I know these trousers r good and this is why i wanted a second pair sadly they r yet to arrive
    18 December 2016
    Very nice trousers. Good fit. Side zip can be slightly tricky and the hook and eye fastening at the top not sewn in very well. True to size and good quality.
    18 December 2016
    Great fit and quite dressy for night's out !
    20 November 2016
    Smart and comfortable
    16 November 2016
    they were a tad too short however they have a hem so I can organise letting down
    15 November 2016
    Unfortunately trousers did not fit well or look good on me
    10 November 2016
    Fits well side zip a bit awkward to do up
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