If you're Taylor Swift, how do you top bringing out Justin Bieber for a duet of "Baby"? You bring out Jason Mraz!
At her concert on Wednesday night, day 2 of her Staples Center shows, Taylor Swift surprised the audience with a duet of Jason Mraz's "I'm Yours" with the man himself. The crowd went crazy!
Spotted in the crowd were a few of Taylor's celebrity friends, including Emma Stone and Kylie, Kendall, and Kris Jenner. Also, Katherine Heigl was in the audience to support her husband Josh Kelley who opened along with Needtobreathe.
Check out the cover below. Taylor has two more shows left in LA at the Staples Center this weekend. We can't wait to see what special guests she brings out next.