During One Direction's Wednesday morning appearance [1] on The Ellen DeGeneres Show, audience members got a big surprise when 1D superfan Rebel Wilson arrived. In addition to naming her favorite song off the band's recently released album [2], Made in the A.M., the Aussie actress debuted a short trailer for her hilarious new romantic comedy, How to Be Single. The film, which has been in the works for quite a while [3], stars Dakota Johnson [4], Alison Brie [5], Leslie Mann, Anders Holm, and, ironically enough, Rebel's ex-boyfriend [6] Mickey Gooch Jr. and follows New York City singles on their quest for love. Watch the full trailer right here [7], and don't miss more great Rebel moments [8] on Ellen!