Check Out Kristen Stewart's Halloween Costume!

Kristen Stewart is all smiles while throwing a baseball into the air during her appearance on The Tonight Show Starring Jimmy Fallon on Thursday (October 31) at NBC Studios in New York City.

The 29-year-old actress was dressed up as a bloody baseball player for the Halloween episode of the show!

PHOTOS: Check out the latest pics of Kristen Stewart

Kristen is on the talk show to promote her upcoming hosting gig on Saturday Night Live this weekend. She is on the show alongside musical guest Coldplay!

Coming soon for Kristen is her movie Charlie’s Angels, which is set to hit theaters on November 15.