Sizing Information

When you’re pregnant for the first time, its hard to know what size to buy clothes that will fit over your growing bump.

Maternity Sizes can be confusing across different brands and you may be unsure whether to buy the size up, or the size you were before your pregnancy.

Specifically designed maternity clothing

Generally, if you are purchasing a Maternity Style of clothing, you should buy your usual pre-pregnancy size as the cut of the maternity item has catered for the extra growth in the particular areas of your body.

Non-maternity clothes to wear over the bump

If you are purchasing a non-maternity item (to wear during your pregnancy) we suggest going one size up from your usual pre-pregnancy sizing. (i.e. if you were a 10 before pregnancy, purchase the 12) – this only applies to non-maternity ranges.

The Rockmama Maternity Essentials Basics Range

The Rockmama Basics Range is a maternity design. So please select your pre-pregnancy size of clothing.

Maternity jeans exclusive to Rockmama Australia

The Vintage Wash Skinny Leg Jeans are also a maternity cut and have catered for extra growth.

They are a larger cut so we suggest selecting your pre-pregnancy size in these also.

Size 26Size 27Size 28Size 29Size 30
From Hip (top of jeans) to the Ankle (Bottom of jeans)91cm92cm92cm92cm92cm
Hip Size38cm40cm43cm45cm46cm


If you have any further sizing queries, please email us at and we will answer any questions as best and quickly as possible.

Happy Shopping Rockmama’s! xx