Ke$ha wrote “Till the World Ends” for Britney Spears, which hails from Femme Fatale. She also has her own single, “Blow,” that’s receiving success. So how does she want to celebrate?
The singer, 24, suggested “skinny dipping,” adding they can also have a joint party, with a fun theme. "It would be a dress-up-like-Ke$ha-or-Britney party," she says. "Either her place or my place, it doesn't matter,” she told People.