TAYLOR SWIFT will guest-star on the season finale of "New Girl" on May 14th.
On the episode, HANNAH SIMONE'S character Cece is getting married . . . and Taylor is playing her fiancé's ex-girlfriend, who shows up at the wedding and interrupts it at the "speak now or forever hold your peace" moment.
Interestingly enough, Taylor's song, "Speak Now", is about her doing that exact same thing. In the song, she stands up and asks her ex-boyfriend to run away with her.