T.I. and Tameka "Tiny" Cottle are expecting another baby!

The rapper and his wife took to Instagram Christmas evening to share the exciting news.

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In the video posted Friday, Tiny shows off the "best Christmas gift" of all: her baby bump, which is complete with a red bow.

"Merry Christmas! Thank you to my family for my wonderful gifts…But most of all thank you for our new heir to the throne," she says. "This is the best Christmas gift you could've ever gave me."

T.I., 35, and Tiny, 40, share two other children together -- 11-year-old Clifford "King" Joseph Harris III and 7-year-old Major Philant Harris. Tiny gave birth to a stillborn baby, Leyah Amore Harris, six months into her pregnancy in 2007. T.I. is also dad to two older sons, 15-year-old Messiah Ya'Majesty Harris and 14-year-old Domani Uriah Harris, and a daughter, 14-year-old Deyjah Imani Harris, from previous relationships.

In more celebrity baby news, Chrissy Teigen and John Legend announced the gender of their baby earlier this week over Instagram.

WATCH: Chrissy Teigen and John Legend Reveal They're Having a Baby Girl!

The FABLife host made the exciting reveal in the caption of a photo of her January Vogue Thailand cover.
"A couple minutes after this shot, John and I learned we were having our little baby girl!" she wrote.

Watch the video below to hear more.