Huge congratulations are in order for Christina Aguilera and her fiancé Matt Rutler following the birth of their baby girl this weekend.

Summer Rain was delivered by Caesarian section at Cedars-Sinai Medical Center in Los Angeles on Saturday, US Weekly reports.

This morning, Christina announced on Twitter: 'So proud to welcome our beautiful daughter Summer Rain Rutler into the world.' 

Summer Rain is Christina’s second child - she already has a six-year-old son, Max Liron, with former husband, Jordan Bratman.

The singer has been working up until the last, posting a photo on Instagram last week of herself holding a pair of headphones to her (rather large) bump while recording in the studio.

Congratulations from ELLE.