Martha Stewart, 78, is a total smokeshow in glammed-up photo: 'What a great new haircut can do!'

Sexy at 78!

She's no doubt got countless seasonal engagements on her schedule, and Martha Stewart is "ready for a slew of holiday parties!" in a glamorous new snapshot on Instagram.

"Oh boy!" Martha captioned the snap. "What a great new haircut can do!"

And she's not exaggerating: The home decor queen looks a fraction of her age with a voluminous layered blonde blowout, a smoky eye and nude lip.

"You look beautiful! It's always wonderful to get our hair done and get dolled up!" one fan wrote, while others asked if she'd mind sharing details of the makeup brands she used.

"I am 58 and I dearly love your makeup and hairstyle in this photo," one wrote. "You look stunning!"

Her hair and face styled to perfection, Martha later headed to her first holiday party of the year wearing a bronze sequin sweater coat.

While she's currently braving the cold in New York City, the multi-faceted businesswoman was recently able to escape the low temperatures with a trip to Costa Rica. She shared photos of lovely sunsets and ponds, but she was perhaps most taken with an unexpected spotting: A long line of fire ants "carrying pieces of leaves to a destination in the jungle."

"We tried to find where they were going and what they were doing but to no avail," she wrote.

RELATED: Martha Stewart in the '70s and '80s

Martha Stewart in the 1970s and '80s
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Martha Stewart in the 1970s and '80s
My assistant found this great photo of me in my library at turkey hill Wish it was taken last month !!!photo by Henry wolf
Caterer Martha Stewart outside in backyard with her pet persian cat perched on her shoulder. (Photo by Arthur Schatz/The LIFE Images Collection/Getty Images)
Homemaking maven Martha Stewart placing flowers atop beautifully decorated cake in dining room at home. (Photo by Evelyn Floret/The LIFE Images Collection/Getty Images)
American businesswoman Martha Stewart carries a basket of eggs as she leans against a wheelbarrow on the grounds of her home, Westport, Connecticut, August 1976. (Photo by Susuan Wood/Getty Images)
American media mogul and businesswoman Martha Stewart exits a chicken coop with a basket of eggs, August 1976. (Photo by Susan Wood/Getty Images)
Homemaking maven Martha Stewart & publisher husband Andy posing in garden outside their farmhouse. (Photo by Evelyn Floret/The LIFE Images Collection/Getty Images)
Gourmet/writer Martha Stewart (c) stands behind a table full of her creations, surrounded by students at one of her seminars on entertaining. (Photo by John Dominis/The LIFE Images Collection/Getty Images)
HOLLYWOOD, CA - 1989: Homemaking diva and magazine publisher Martha Stewart attends a 1989 Hollywood, California, movie premiere. (Photo by George Rose/Getty Images)
Martha Stewart during 'Let Them Eat Cake' The National Pastry Competition's - July 16, 1990 at Plaza Hotel in New York City, New York, United States. (Photo by Ron Galella/WireImage)

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