Lady Gaga to Britney Spears: It's Time to Collaborate!

Lady Gaga is a burst of color as she makes her way out of her hotel on Sunday morning (December 8) in London, England.

Earlier that morning, the 27-year-old entertainer responded to reports that Britney Spears wants to collaborate with her.

PHOTOS: Check out the latest pics of Lady Gaga

“@britneyspears lets do this b*tch its time,” Gaga tweeted at her. We’d love to see them work together!

The night before, Gaga rocked a bold black ensemble while holding hands with designer Philip Treacy.

30+ pictures inside of Lady Gaga out and about in London…