Lady Gaga Bada-Boobs ... Bada-Bum

9/9/2016 8:28 AM PDT

Lady Gaga Shows Off Underboob and Booty

Lady Gaga's full of crop tops in London, which means she's letting almost everything hang out. 

Gaga left Capital London early Friday morning with a giant denim wedgie -- and cup of coffee. 

She's got a new song out, and if this is how she's gonna promote, we say ... keep plugging away, Gaga!