The 33-year-old singer shared a cut picture of little Summer who is five months old! She captioned the first photo, "Watch out...another one's getting ready to conquer the world! #driven #diva2."
Wearing a little and frilly pink dress, Summer is showing her cute bump and a diaper that reads, "Lil Diva." Although we did not get to see her face, we at least got a glimpse of her and fiancé Matthew Rutler's first child together.
The singer's pregnancy was revealed in February 2014. A week later, she announced her engagement to Rutler who is a producer. Christina and Rutler met on the 2010 set of 'Burlesque', Aguilera's big screen debut, which also starred Cher and Julianne Hough.
The little diva joins big brother Max, who recently turned 7. His father is Aguilera's ex-husband, Jordan Bratman.
Christina is back as a judge on The Voice after taking a year long break. When Christina was pregnant, Gwen Stefani filled in as a judge alongside Adam Levine, Blake Shelton and Pharrell Williams on The Voice.
Apart from judging the talent show, Aguilera is also working on her new album, a follow-up on her seventh major record, Lotus.
A few days before giving birth in August, Christina shared a sweet pic on Instagram and captioned, "Baby girl getting first listen to what mama's been creating in the studio."