Taylor sat down with the host for a very special edition of his Teen Nick show Ew! where she showed off her acting skills playing Natalie, the new girl in town who loves to chill out all the time, eat apricots and wear scrunchies.

The two, of course, became quick BFFs talking about Band-Aid collections, making popsicle stick castles (alone, of course) and drawing mythical characters. Natalie's really into pegacorns - a pegasus and unicorn combo.

But of course, Taylor makes it very clear, one must never, ever get back to together with an ex. Like, ever. Also on the show, Taylor announced that she'll be performing at the VMAs on August 24. The Red singer also plans to make a big announcement on her Yahoo! Livestream next Monday, Aug. 18 at 5 p.m. EST/2 p.m. PST in New York City. But, she preferred not to let Fallon know much about that, only saying it could be one announcement or or more than one. She's so mysterious!