It’s a very Syd Christmas.

Sydney Sweeney announced a forthcoming holiday collection from her lingerie company, Syrn, teasing the festive collection with a video on Instagram full of nostalgia.

The actress starts the ad sits on an upholstered chair, digging into a bowl of ice cream as she switches on the TV “Home Alone” style.

What appears on screen is her likeness, dressed with braided pigtails that fasten to the top of her head, channeling Cindy Lou Who from “How the Grinch Stole Christmas.”

Wearing two separate sets of plaid pajamas and a Who-inspired fur-trimmed cape, Sweeney balances a pile of gifts and finishes setting up Christmas lights in the festive scene.

As the final bulb is screwed into place, the campaign makes a swift change to a more stripped-down “Corpse Bride” with a stitched smile drawn on Sweeney’s cheeks and a decidedly more skin-baring duo of black and red lace lingerie sets.

In a third look, she references “White Christmas” in an icy blue lace set, kneeling in a snowy scene with white feather fans in her hands followed by a white set paired with white fur cuffs.

The different personalities of the campaign mirror Syrn’s four different capsule collections; Available on Oct. 27, the company will first launch their Comfy styles, which will presumably include the flannel pajamas.

Offerings from the “Seductress,” “Playful” and “Romantic” “worlds” will follow.

Racy as some of her included holiday looks are, they’re decidedly more covered up than her last ad campaign for sports betting app Novig, for which she posed completely in the buff.