LISTEN: Lady Gaga's Leaked 'Kaboom'
The single is #1 in the UK for a second week, as well.
GaGa, whose real name is Joanne Stefani Germanotta, is pictured here clad in black leather while walking through London's Heathrow Airport last weekend.
The singer is currently supporting her Interscope labelmates Pussycat Dolls on their European tour. When Lady returns to the States, she'll begin her own headlining tour in March.
Lady GaGa's iron couldn't be any hotter right now. Conveniently, a supposedly unreleased track of hers called "Kaboom" has leaked online. The tune is also said to feature R&B/Hip hop singer Kalenna.
In Lady's official fan forum, GaGa devotees are debating whether or not it's actually Lady GaGa singing.
Have a listen and decide for yourself:
Is this just a PR stunt? Blast your thoughts about "Kaboom" in the poll below!