Lady Gaga might have stepped out in everything from a dress made entirely of meat, to practically nothing – but she never fails to shock us.

The singer was spotted heading to rehearsals today – but forgot her bra – and the result was fairly eye-popping.

Holding her black jacket loose round her waist, the star showed off huge amounts of cleavage in a loose navy dress – and it was completely sheer, showing the star’s nipples beneath the thin material.

Was she bothered? Of course not.

The thin straps barely held the dress in place, and she added huge circular sunglᴀsses to show off her usual out-there style.

Wearing her brunette hair tied back, Lady G appeared to have minimal make-up on and shimmied past the cameras in high stilettos.

Just another day in the life of Gaga.

After a long day at work, she tweeted today: “Recorded a song w/ amazing @Diane_Warren for very important doc #TheHuntingGame that premieres at Sundance tonight! Congrats 2 all involved!”

It comes after she dropped an almighty hint she’s working with none other than Adele recently.

The pair posed together for a shock selfie, with Adele even SMILING next to her friend.

The 26-year-old singer is currently in the US working on her third album, which makes us think the pair are 100% working on music together. Hooray!

“Nothing like a Wednesday night bro-down with the beautiful Adele,” Gaga wrote next to the selfie.