She teamed the one-piece with stockings, white cuffs, a bow tie and red bunny ears.
The ex of Paul Hollywood wore her fiery red locks in soft curls and accentuated her bronzed tan with a glamorous make-up look.
Cheeky! The equestrian lover, 25, put on a racy display as she posed in the lingerie and fishnet stockings
Racy: Summer teased a hint of her cleavage in the bodysuit from Anne Summers which was adorned with red glitter and featured a high rise design which showcased her pert derriere
Summer was joined by her beloved Chihuahua Cookie, who donned a Santa Claus jumper and matching socks.