The former Xscape singer announced her pregnancy news in a sweet Instagram video on Christmas Day (25Dec15), when she confirmed rumours she is expecting by showing off her growing baby bump.

"Merry Christmas!" she said in the festive footage. "Thank you to my family for my wonderful gifts."

"But most of all, thank you for our new heir to the throne," she added as she gestures to her bulging belly, which was decorated with a bow. "This is the best Christmas gift you could've ever gave me (sic)."

Cottle first sparked speculation she was expanding her family in late November (15), after attending her old bandmate Kandi Burruss' baby shower, where a relative shared a shot of the pals on Snapchat and suggested they were both pregnant. The post was promptly deleted.

Congratulating the pair, Burruss writes on Instagram, "Congrats to my sis @majorgirl & @troubleman31! I'm glad y'all finally made an official announcement. Our babies get to play together! Yay!"

The couple, which wed in 2010, already has two sons together, King and Major, while Cottle gave birth to a stillborn daughter, named Leyah, in 2007.

T.I., 35, also has three children from previous relationships, while Cottle, 40, is mum to another girl from an past romance.