Both ladies also trowled on the make-up, not that they needed to on their sunkissed tans following a joint holiday to Ibiza.
Former X Factor judge Tulisa, 25, opted for an all-black ensemble, complete with leather skirt, midriff-baring crop top, and chunky gold chain around her neck.
There was of course plenty of blonde extension highlights in place and bubblegum pink lippy to complete the Barbie doll fakery.
Meanwhile, Chelsee looked to be inspired by her Strictly Come Dancing costumes, opting for a thigh-skimming fringed frock.
Other pals to descend on the mayhem included X Factor runner-up and Les Dawson's daughter Charlotte.
And it seems the girls had quite the night, with the birthday girl tweeting today: "Me n the girls woke up...... Like somein out the hangover! Omg ha ha ha."
She later added: "Lucozade is doing bits right now".