Jake Gyllenhaal on the Set of Okja Pictures

Jake Gyllenhaal may be known for being a total hunk, but he proved he's also quite the jokester when he was spotted filming his new movie Okja in NYC on Saturday. Donning a funny mustache, the actor didn't hold back as he paraded around set wearing an eccentric outfit complete with matching knee-high socks. Of course, the real fun came when his costar Tilda Swinton joined him in an equally amusing getup — an oversize pink dress and blond wig. The Netflix original movie, which also stars Lily Collins and The Walking Dead's Steven Yeun, is slated for a release sometime in 2017, but until then, you can relish in all the wacky photos below.