New mum Christina Aguilera turns heads in cleavage-baring dress in smoking red carpet return

The singer made her first red carpet appearance since the birth of baby Summer at the Breakthrough Prize Awards Ceremony

After welcoming her baby daughter into the world four months ago, Christina Aguilera certainly made sure her first public outing was a memorable one on Sunday.

The Beautiful hitmaker’s ample chest was hard to miss in her daringly low-cut red maxi, complete with long sleeves and flattering ruched detailing.

Accompanied by her fiance Matthew Rutler, the 33-year-old posed for photos as she arrived at the Breakthrough Prize Awards Ceremony at California’s NASA Ames Research Centre.

(Image: Getty)
The couple – who got engaged in February after three years of dating – were enjoying a rare night off from looking after their little girl.

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She had excitably tweeted fans to update them on the arrival in August: “So proud to welcome our beautiful daughter Summer Rain Rutler into the world.”

Christina is yet to release a snap of her daughter, however she shared a photo of herself from behind bars as she visited Alcatraz in San Francisco at the weekend.

The Grammy winner has soon regained her pre-pregnancy figure after baring all in a smouldering shoot for V Magazine just weeks before the birth.

The star is already a mother to six-year-old Max who she had with her first husband Jordon Bratman.

Her outing comes just days after she appeared to respond to Valerie Bertinelli’s “cold shoulder” remarks, writing “In more important news…” to accompany a shot of a recording studio.