Chrissy Teigen has been taking maternity style advice from Kim Kardashian West.

Chrissy Teigen

Chrissy Teigen

The 'Lip Sync Battle' star - who is expecting her first child with husband John Legend - was advised by the brunette beauty to go "stretchy" and show off her bump, particularly as they are both married to men who "find pregnancy sexy".

Speaking of the advice she got from Kim - who has kids North, two, and Saint, six weeks, with husband Kanye West - Chrissy said: "She told me to go stretchy. I always wanted to be the person who showed off the bump because it looks beautiful and I think you should embrace it.

"Kim does that well and I love seeing that belly of hers and I know Kanye does too -- we're lucky to be with men who find pregnancy sexy. Thank God!"

And the 30-year-old model has found one garment that suits her every need.

She explained: "There's this one Wolford tube dress that you can fold a million different ways, you can make it a skirt, a this, that. I bought it in every colour in small, medium, large, in anticipation of the entire process, so I have, like, 45 of them."

While she is embracing her new wardrobe, Chrissy doesn't understand why other expectant parents strive to create a "perfect" nursery for their offspring - because babies just "barf and poop everywhere".

She told Australia's InStyle magazine: "Nurseries have always been silly to me because everyone always wants them to be so beautiful and so perfect, but this thing is just going to barf everywhere and poop everywhere."

Chrissy and John, 37, haven't yet settled on a name for their baby.

She admitted: "We change the name every day, basically."