The former X Factor winner looked lovely in a floor-length black gown with lace embellishment for the star-studded screening in Leicester Square.
We have to wonder though, is she not cold?!
Sam was joined in Leicester Square by her husband Craig, who looked dapper in a tux, and their young daughter Brooke, who looked very sweet in her military coat.
The family also includes son Tommy and baby daughter Miley, who was born in September.
Sam won the tenth series of X Factor last year but this weekend, she handed her winner's crown over to Ben Haenow, who emerged victorious over Fleur East in the eleventh series.
Since winningX Factor, Sam has gone on to release a number one album and have a Christmas number one with song 'Skyscraper'.
A tour is planned for next year.
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!