Katy Perry Covers Rihanna, Lady Gaga in Concert

Katy Perry channeled two of her contemporaries this weekend with a cover of Rihanna's "Only Girl" and Lady Gaga's "Born This Way" in Manchester (UK).

The singer has teased an upcoming collaboration with Rihanna - though it's unclear what that will entail specifically - and paid homage to her BFF here.

Perry has been touring Europe, where she's been linked to model Baptiste Giabiconi, in the wake of her surprising divorce from zany comic Russell Brand.

Take a listen to the live Gaga-Rihanna medley below ...

Katy Perry - Only Girl / Born This Way (Live)