Celeb bump day: Sienna Miller, Neve Campbell, Anna Paquin, Snooki

Kourtney Kardashian

A very pregnant Kourtney Kardashian was spotted leaving Barneys New York with her son, Mason Dash Disick, and her baby daddy boyfriend Scott Disick.

Since Kourtney is in her third trimester, the reality star has been loving maxi dresses, which are a great choice when you are pregnant as they are flattering, stylish and (most importantly!) comfortable.

Check out 5 easy tips to look great and feel great during pregnancy >>

We can see why Pregnant in Heels star Rosie Pope told us that she thinks Kourtney has the best celebrity maternity style. Do you agree?

From Drew Barrymore to Sarah Michelle Gellar, check out more celebrity baby bumps here >>

Photos: WENN