SEE IT: Kate Middleton Gets Into the Christmas Spirit With a Festive Frock

One royal is definitely getting into the holiday spirit these days. READ: Kate Middleton Commits Fashion Faux Pas Duchess of Cambridge Kate Middleton, who never fails to stir headlines with her often recycled ensembles, has debuted yet another head-turning look in London, this time at a Christmas party for youth charity The Mix on Monday.  The 34-year-old mother of Prince George, 3, and Princess Charlotte. 1, wore a knee-length silk jacquard dress by Argentina-born French fashion designer Vanessa Seward. The dress highlighted Christmas-inspired hues of red and green with its vibrant floral print, and was cinched at the waist with a thin black belt featuring a wide golden buckle, which conjured up images of Santa's classic ensemble, albeit much more chic. (Yeah, we went there.) She completed the outfit with simple black pumps, a matching clutch, and of course, her envy-worthy blowout. READ: How Kate Middleton Makes Her Royal Waist Look Tiny While the gown goes for a whopping $623 at Net-A-Porter, it’s already sold out. However, fashionistas everywhere can still take inspiration from Middleton's festive frock before their next holiday parties. See how Middleton is spreading Christmas cheer with her personal style below: