Sebastian Stan & Margarita Levieva Find Wonderland at UNICEF Ball

Sebastian Stan hits the green carpet at UNICEF Adventures in Wonderland Masquerade Ball at Marquee on Thursday evening (October 30) in New York City.

The 32-year-old Captain America: The Winter Soldier actor was joined at the big bash by his girlfriend Margarita Levieva.

PHOTOS: Check out the latest pics of Sebastian Stan

Sebastian should’ve felt right at home during the Wonderland event — he played the Mad Hatter for two seasons on Once Upon a Time.

Sebastian Stan and Margarita Levieva have been dating since this past summer.