NCIS stars Pauley Perrette and Emily Wickersham shared behind-the-scenes holiday photos from the set and it's clear the whole crew knows how to have a festive time.

Perrette, who plays Abby Sciuto, tweeted a photo of herself with the NCIS crew on Dec. 19 as they all sported ugly sweaters.

Tony DiNozzo's Love Life To Unfold This Season  

“Me with #NCIS crew on their #UglyChristmasSweater day!” she wrote as the caption.

Wickersham, who joined the cast last year as Ellie Bishop, shared a picture of three members of the NCIS camera crew wearing their ugly sweaters.

Get The Details On Jeri Ryan's NCIS Appearance   

“Our camera department gets it done in holiday spirit #NCIS,” she wrote as the caption.

The photos come after the show's anticipated Christmas episode aired on Dec. 16, which showed McGee (Sean Murray) reflecting on the past and had cameos from former NCIS colleagues.

"Thank you for all the feedback! great to hear most liked our xmas episode," Murray tweeted on Dec. 20.

Tags: NCIS