We've designed our maternity clothes in line with your pre-pregnancy clothing size for extra ease… giving you one less thing to think about. Many pieces are infused with our signature ruching and wrapping for a flawless fit at every stage.

• Refer to the chart below. It's really that easy.
• Take your pre-pregnancy clothing size, and look across the chart to find your Isabella Oliver size.
• So, if you were usually a EU 40 before you were pregnant, just order an Isabella Oliver size 3, or if you were a EU 42 before you were pregnant, then our size 4 is the size for you.

Isabella Oliver Clothes Sizing Guide

Isabella Oliver Maternity size	0	1	2	3	4	5	6
UK Pre-pregnancy size	4-6	8	10	12	14	16-18	20
US Pre-pregnancy size	0-2	4	6	8	10	12-14	16
EU (FR) Pre-pregnancy size	32-34	36	38	40	42	44-46	48
AU/NZ Pre-pregnancy size	6-8	10	12	14	16	18-20	22

Isabella Oliver Maternity Size	Small		Medium		Large		X Large
UK Pre-pregnancy size	8	10	12	14	16-18		20
US Pre-pregnancy size	4	6	8	10	12-14		16
EU/FR Pre-pregnancy size	36	38	40	42	44-46		48
AU/NZ Pre-pregnancy size	10	12	14	16	18-20		20

Isabella Oliver Maternity Measurement Guide

Isabella Oliver	Bust		Waist		Hips
	cm	in	cm	in	cm	in
0	81	32	64	25	89	35
1	83.5	33	66.5	26	91.5	36
2	86	34	69	27	94	37
3	91	36	74	29	99	39
4	96	38	79	31	104	41
5	103	40.5	86	34	111	44
6	110	43.5	93	36.5	118	46.5

Isabella Oliver Trouser Lengths

Isabella Oliver	cm	in
Regular	81	32
Long	86	34

Isabella Oliver Jeans Sizing Guide

Isabella Oliver Maternity sizing	1	2	3	4	5	6
EU Pre-pregnancy size	36	38	40	42	44-46	48
Isabella Oliver Maternity Jeans sizing	25	27	29	31	33	35

Expecting Twins?

If you are pregnant with twins, we recommend you go up a size. So, if you were a size 40 before you were pregnant, order an Isabella Oliver size 4.

Clothing measurements in centimeters and inches can be found on our individual product pages. If you require a little more information, just call +44 20 7284 3001 or email Help@IsabellaOliver.com, and we'll be delighted to help you.

Measuring your bra size
A well-fitting bra is a wardrobe necessity, whether you are pregnant or are nursing. Follow our simple guide to find your perfect fit. Click here

Hosiery sizing
Isabella Oliver Luxe Opaque Tights are essential for your maternity wardrobe during the colder months. To find your size for the ultimate comfort click here.

Nearly Nude Sizing

	S/M	M/L
UK	8-12	14-18
US	4-8	10-14
EU	36-40	42-46

Spanx Sizing

Use the below size chart for the Mama Spanx range. Use your pre-pregnancy weight to work out your size (click on the picture to enlarge).