Katy Perry: It's Business Time

Katy Perry dresses for success as she stands outside an office building in Los Angeles on Thursday (March 25).

The 25-year-old singer chatted on her cell phone as she left the building, carrying her swag in a Chanel purse!

Earlier in the day, Katy tweeted a photo of her with her own “swag coach” – Snoop Dogg!

“Take that Biebz!” she wrote, referring to teen pop sensation Justin Bieber.