Charli XCX flashes bum cheek as she exits boozy BRITs after-party

THE best part of the BRITs is seeing normally composed celebs fall into taxis bleary-eyed after one too many free cocktails.

    IT STARTED SO WELL: Charli went all out on the red carpet

And Charli XCX definitely delivered.

The Boom Clap singer arrived at the BRIT Awards in London's O2 Arena looking ethereal in a floor-length lace gown, complimented by slicked back hair.

But at the after-party, things got a little bit more risqué.

Charli changed into an eye-wateringly short orange plaid mini skirt, teamed with a zip down vest and a leather jacket for the Warner Music bash at Freemason's Hall.

    CHEEKY: The singer's skirt didn't offer much coverage

    ALL PARTIED OUT: Charli left the Warner bash looking a bit worse for wear

And when the 23-year-old attempted to get into a carriage (read: black cab) home, her skirt betrayed her booty.

As the popstar climbed into the car, she flashed a bit more bum cheek than intended, and was seen looking ready for bed in the backseat.

But Charli wasn't the only celeb who over-indulged at the various after-parties dotted around the city.

Poor Abbey Clancy, who sizzled on the red carpet earlier in a sideboob-flashing frock, looked like she was already regretting the night as she left the party, holding her head in her hands and sporting laddered tights.

   GOOD NIGHT? Abbey looked ready for bed

Been there, love.

Everyone from Nick Grimshaw to Lorde rocked up to the Warner party, where guests were treated to swanky Ciroc cocktails.

No wonder there's some sore heads around showbiz land today.