And like the true beauty guru she is, the former TOWIE star followed it up with her personal tips on how to create the best, long-lasting lip...
Maria's become quite the make-up icon this year, having launched her very own line of cosmetic brushes, Fierce Face as well as being super-active on YouTube with her make-up tutorials...
And we're loving her latest look which not includes one helluva sexy, dark berry pout, but perfectly arched eyebrows, smoky eyes and dark, luscious lashes.
"Winter. Lips: Mac Diva," Maria Instagrammed on Wednesday (30 December) along with her sexy snap and a few extra tips to follow...
"Make sure you apply on edges with lip brush to keep it neat," was her first tip. "It only looks good if it's really neat."
"Neaten the edges with a good concealer and concealer brush too. This really helps," she later added.
Woah there Maria, you'll do us out of a job if you carry on revealing all of these trade secrets!
The one tip we did love, however, was her bargain recommendation for making sure her MAC Cosmetics Lipstick in Diva, £15.50, maccosmetics.co.uk stays put all day (and night) long.
"Blot first, later on tissue, then reapply and finish with Lipcote," she posted.
Yes, you'd better believe it ladies, our Maria uses that classic lipstick sealer, Lipcote, £3.69, boots.com.
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