Amber Rose Flaunts Bare Baby Bump in Revealing Twitpic

Khalifa's fiancée tells fans her and Wiz Khalifa's "lil wizbud is growing so fast"

Amber Rose is positively glowing!

The pregnant model and mom-to-be showed off her growing baby bump (and hot-pink underwear!) in a twitpic posted Monday. "Good morning Rosebuds & Rosestuds Our lil wizbud is growing so fast ;-)" she wrote.

Amber, who previously dated Kanye West, and fiancé Wiz Khalifa revealed at the MTV Video Music Awards they do know their child's gender, but they're choosing to keep it a secret. Fair enough!

This will be the first child for Amber and Wiz. We wish them the best.