(Yahoo!) - Looking good, Amber Rose!

The new mom debuted her post-baby body on Monday night, showing off her curves in a low-cut, red dress.

Rose, 29, welcomed her first child, son Sebastian "The Bash" Taylor Thomaz, with fiancé Wiz Khalifa on February 21.

Being pregnant apparently did not take a toll on Rose's body. In February she tweeted: "9 months pregnant & no stretch marks on my body thank you Jesus!!! :-)"

Kanye West's ex-flame had been very vocal on Twitter about her life after baby.

“Sebastian is so cool!” Rose tweeted March 7. “He makes us laugh all day. LOL. He’s just 2 weeks old and super silly like me and his dad.”

As for Khalifa, fatherhood hasn't changed the 25-year-old rapper too much. He tweeted Monday:

READ MORE: Yahoo!