The costars were spotted doing just that in Burbank, Calif., on Thursday, Nov. 7.
And thanks to their form-fitting elf costumes, the two costars quickly turned into the sexiest of Santa's litttle helpers.
In fact, Rivera seemed to take it one step further, serving up some skin by forgoing the full stockings and trading them in for a pair of thigh highs.
Then again, Rivera has already given us a bit of stocking stuffer.
The 26-year-old singer-actress currently graces Rolling Stone's Latin Hot List 2013 flip cover, showing off her svelte, endlessly long legs, toned tummy and sexy cleavage while posing provocatively in a fitted black one-piece and high heels.
Merry Christmas indeed!