Justin Bieber & Taylor Swift Perform ‘Baby’ Duet (VIDEO)

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We knew Taylor Swift had Bieber fever when she covered his song “Baby” acoustically while on tour, but she surprised a Los Angeles audience on Tuesday night when she showed up to the Staples Center to duet with Justin Bieber

While the teen heartthrob was singing his hit song “Baby,” T-Swift hit the stage in a lavender dress to sing along! The two sounded great as the crowd went wild! Justin Bieber even started to rap! 

Taylor is great friends with Justin’s “baby” Selena Gomez!

Back in Dec. 2010, SelGo chatted with Ryan Seacrest about her friendship with the “Mean” singer and how they never have a boyfriend at the same time, saying: 

“We have a joke, whenever she breaks up with someone she’ll be like ‘well that means you’ll have a boyfriend soon, so good news for you!’”

Same is true now! While Selena is dating the Biebs, T-Swift is a single woman, not being romantically connected to anyone since Jake Gyllenhaal and Chord Overstreet.