The Corrie star looked gorgeous in a tight leopard print dress and heels as she hit Anaya nightclub with the girls to celebrate her big day.
But although The Wanted star Max George had been expected to attend the affair there was no sign of the singer.
He and TW bandmates Tom, Jay, Siva and Nathan hit the stage in Birmingham earlier in the night.
And the lads are set to play along with Little Mix, Professor Green, Conor Maynard and a host of other acts at T4OTB today.
So it looks like Michelle Keegan turned her birthday into a girls night - as she hit the streets of London with a gang of beauties.
Michelle retweeted her friend's picture (below) with the caption: "Here come the girls".
And she posted: "In London baby yeeeeeah!! With @hmonners @littlepintsize and @fearnyx Powering through!!!!!! xxx"
And it looked as if they were having a right laugh as they giggled their way across London.
Michelle, who teamed her dress with lashings of red lippy and had her long brunette hair down, shared LOLS with her girls as they partied the night away.