Christina Aguilera Wango Tango performance with her blossoming baby bump went on public display for all her fans at the KIIS FM Wango Tango concert in Carson, California. The "Beautiful" singer was seen sporting a form-fitting little black crochet dress with her blond locks tied up.

The "Genie in a Bottle" hit maker, wore a heavy eye make-up and red lipstick for the evening with black and white hounds tooth heels that completed the look for the evening.

Christina Aguilera Wango Tango performance takes the hot factor at the evening, a far more notches up and above with a protective hand held over her baby bump, as she poses for snaps. Aguilera is expecting Baby No. 2, however the first child with fiancé Matthew Rutler post her engagement, E! News reports.

Belting out some of her greatest hits at the concert, the 33-year old songstress was full of energy to set the stage on fire with her Wango Tango moves. Christina Aguilera is already a mommy to her 6-year old son Max with ex-husband Jordan Bratman.

Singing her popular hit, "Say Something" with the group A Great Big World, Christina Aguilera Wango Tango performance was not the only one to set the temperature rising. There were other big names at the evening to include Maroon 5, Iggy Azalea, Shakira and Adam Levine.

Besides preparing to welcome their daughter this year, the singer is also busy working on a new album. She tweeted earlier this April, ""So blissful in taking this time for creating all things blossoming new on the horizon...album, baby & beautiful music to come," US Magazine reports.

Christina is expecting a girl this year around autumn and her beau of three years, film producer Matthew Rutler met her on the sets of 2010 movie Burlesque. Christina Aguilera starred with Cher in the movie and Rutler was a film assistant, Daily Mail UK reports. They now live together in Christina's palatial Mulholland Estates home in Los Angeles, which she reportedly purchased for $10million last year.