The singer will now release her new LP The Female Boss and single 'Sight Of You' on December 3.
The star's performance on The X Factor live results show this Sunday has also been moved back to December 2 to coincide with the release.
Tulisa's debut LP includes the chart-topping single 'Young' and 'Live It Up', as well as production by N-Dubz bandmate Fazer, Rico Love (Usher, Kelly Rowland), The-Dream (Rihanna) and Diane Warren (Mariah Carey, Celine Dion).
She recently credited her solo success to her judging spot on The X Factor, adding: "I'm not saying my music wasn't good enough.
"But the way that I have been blown out of proportion is fully down to The X Factor and I am grateful for that and I would never bite the hand that feeds you."
It was previously announced that Tulisa will perform in London's BT Tower on December 10.
Watch Tulisa chat to Digital Spy below: