The Tonight Show Starring Jimmy Fallon

Swift made the sweet gesture to Chastain after they hit it off at The Met Ball—though the actress mistook it for an iTunes ad at first.

The actor opened up to Jimmy Fallon about why Wonka has made him want to act in more children's movies. 

Things got a little too real on the set of Anyone But You, in a moment that portends Sweeney's role as the future Spider-Woman in Madame Web. 

Debuted on The Tonight Show, the "Wrap Me Up" video is a visual delight that whisks you away to a winter wonderland. 

Only John Wick could *pull an actual knife* from someone's nose with such flair (as a horrified Jimmy Fallon looks on). 

The Irish singer and Voice coach pulled off the impressive bit while reading "'Twas the Night Before Christmas" in a Hogwarts-esque scarf.

"It's the nose," Fanning said. "We look like we live in Whoville or something,"

Fellow Travelers star Matt Bomer described what first meeting teenage Taylor was like back when she was Brad Paisley's opening act.

We never knew we needed to hear Julia Roberts say "Christopher Meloni's Baloney-Flavored Beefaroni" until now.

The "Houdini" singer also joined Jimmy Fallon for some Christmas carols in character as holiday lounge singers Hal and Val.