A source close to the situation explained:
Can this day get any better??
Well, with the VMAs tonight, we're sure it'll try! But it's already totes ridic!
Swifty actually brought THE Jennifer Lopez on stage to perform Jenny From The Block!
They straight up kill it, and don't even get us started on the dance moves! Both ladiez break it down like beasts!
Oh and the glittery outfits! Srsly, it doesn't get more fab than this.
[Image via Christopher Polk/Getty Images.]