ABC News January 19, 2015

First Photo of Christina Aguilera's Daughter

Steve Jennings/Getty Images
Singer Christina Aguilera attends the Breakthrough Prize Awards Ceremony Hosted By Seth MacFarlane at NASA Ames Research Center, Nov. 9, 2014, in Mountain View, Calif.

Move over, Christina Aguilera, there's a new diva in the family!

The singer Sunday posted the first photo of her daughter, Summer Rain, and from the looks of things, she's already enjoying the spotlight at five months old.

"Watch out....another one’s getting ready to conquer the world! #driven #diva2,” Aguilera, 34, tweeted alongside a photo of her baby girl wearing a ruffled onesie emblazoned with the words "Lil Diva" beneath her hot-pink dress.

Christina Aguilera Gives Birth to a Baby Girl 5 Things to Know about Christina Aguilera's Husband-To-Be, Matt Rutler

The "Voice" judge, 34, and her fiance, Matt Rutler, welcomed Summer in August. Aguilera is also mother to son Max Liron, 7, with ex-husband Jordan Bratman.

"So proud to welcome our beautiful daughter Summer Rain Rutler into the world," Aguilera wrote on Twitter.

Aguilera and Rutler announced at the beginning of 2014 that they were engaged and expecting. The singer revealed in March that they were going to have a baby girl.