01/04/2011 12:16 pm ET | Updated May 25, 2011

Pregnant Kim Zolciak Shows Off Baby Bump, Sings 'Tardy For The Party' (PHOTOS)

Kim Zolciak rang in the new year in a tight black dress on Bravo's 'Watch What Happens Live: Andy's New Year's Eve Party,' during which she performed 'Tardy for the Party.' (Scroll down to watch her performance.)

"My baby bump, although it looks small its there, sooo there my jeans dont fit," she tweeted on Monday.

Kim announced in November that she and boyfriend Kroy Biermann, 25, are expecting their first child together.