The former X Factor judge, 25, took to social media yesterday (4 January) to post a childhood snap of herself and her older cousin Dappy - real name Costadinos Contostavlos.
In the archive photo, the Camden-born pair can be seen in a cot, wearing baby vests and sucking dummies looking very cute indeed!
Tulisa, who is a year younger than 26-year-old Dappy, shared the snap after he entered the CBB house on Friday night.
She wrote: "This situation is bringing out the mother hen in me #supportdappy #cbb #babyT&daps."
As babies, they had no idea they were to become famous together after forming hip hop group N-Dubz alongside third member Fazer.
While the cousins have had their public fall-outs in the past, Tulisa is rooting for dad-of-two Dappy on the Channel 5 reality show.
She also tweeted: "Feel like a mum looking through the gates after sending my child 4 his first day at school."
What are your impressions of Dappy on CBB so far? Tell us what you think below!
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Copyright: Channel 5