Met Gala 2019: Lady Gaga pulls off wackiest stunt yet by stripping to her undies on red carpet

Lady Gaga pulled off one of her wackiest stunts yet as she changed her clothes on the red carpet at the Met Gala 2019   in New York.

The pop star arrived at the glitzy fashion ball wearing a HUGE pink gown with a train that seemed to go on forever.

However, she hadn't even made it inside the building when she stripped off the frock to reveal another dress underneath.

The quick costume change left her wearing a chic black number in a major first for the fashion bash.

She then ripped off the black dress to reveal another pink dress before pulling it off to reveal her black underwear.

It's believed no one has ever attempted a red carpet costume change in front of the cameras.

Lady Gaga strips to her undies on the pink carpet (Getty Images)

Met Gala 2019: Vodka shots, leg-shaving and laser facials - see how the stars get ready  

Earlier this evening, many the event's big stars gave fans a glimpse of their preparations as they got ready for the big night.

While some were downing vodka shots, others crammed in last-minute facials to make sure they look their best for fashion's big night out.

Models Bella Hadid and Hailey Baldwin took their prep really seriously as they both had pro facials in the hours before the event.

She started off in a massive pink number (Photo by Dimitrios Kambouris/Getty Images for The Met Museum/Vogue)

She stripped it off to reveal a black dress underneath (Getty Images)

Bella shared a clip of her laser facial, while Hailey also had a last-minute skin treatment.

Bella's sister Gigi let her hair down in the hours before the ball, sharing snaps of herself eating takeaway noodles and holding a bottle of vodka she'd been given.

Lady Gaga, who is co-chair of tonight's bash, flew in on a private jet and revealed she hadn't shaved her legs in four days.

She pulled off the black gown to show a slinky pink number (FilmMagic)

Se ripped that off until she was left in her undies (Getty Images)

Tennis ace Serena Williams managed to get in a last-minute ball game as she the hit court before heading into hair and make-up.

Reality TV star Kim Kardashian started her prep by giving fans a run down of all the previous outfits she wore.

Kim told them how much she loved each of the designer creations she wore to all the other Met Balls, teasing fans that tonight's costume could be her favourite of the lot.

Lady Gaga didn't seem very ladylike ((Credit too long, see caption))

The glitzy affair is usually quite elegant and classy (FilmMagic)

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