I started with three coats of ILNP Indie Go. "Indie Go is a spectacular holographic polish like none other! The stunningly rich finish and added blue sparkle effect pigments really set this polish apart from other holographic polishes out there." (Source: ILNP) As usual, my camera shows this one too blue. It's not royal or navy blue, as it might look in my pictures, but more of a blurple.
The stars, snowflakes and reindeers (and of course Santa) I stamped with aEngland Encore Margot and MoYou London plate Christmas Collection 01. One coat of Pahlish Magic Mirror Top Coat finished the mani.
ILNP polishes are available on Etsy and at their own shop.
aEngland polishes are available at various places, you'll find a complete list of retailers here.