Christie Brinkley shows off incredible body in denim dungarees ahead of 67th birthday

The star will celebrate her birthday on Tuesday

Christie Brinkley is back in her Hamptons home preparing for her big birthday party – which will take place on Tuesday.

MORE: Christie Brinkley's $29.5million home is basically a luxury retreat – see inside

The mother-of-three will be making an appearance on QVC on 2 February to celebrate her special day with fans, who will be able to get their hands on the model's organic, vegan, zero sugar, and zero carb Prosecco.

Christie has been promoting the show since she left her Turks and Caicos holiday home last week and on Sunday, she delighted fans with a throwback clip showing her in her Italian vineyard trying out a bottle of her product, Bellissima Prosecco.

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WATCH: Christie looks stunning during trip to Italy

"This Tuesday Feb. 2nd is your GOLDEN opportunity to get your hands on my #organic #vegan #zerosugar #zerocarb absolutely delicious @bellissimaprosecco at really great price on my @qvc birthday show!

"This video is from last year at our vineyard in Treviso, Italy. Just hanging and talking shop with our master winemaker Massimo. And btw sippers are available on our website at (I'll put showtimes up tomorrow!)," she wrote.

RELATED: Christie Brinkley’s daughter Sailor looks just like her model mum in stunning bikini photos

READ: Christie Brinkley's low-cut red bikini has fans talking

The clip shows the gorgeous 66-year-old sitting on a tractor wheel and dressed casually in a pair of denim dungarees, a blue shirt and a pair of wellies. Her hair can be seen perfectly tied into a ponytail with a red bandana, and she is wearing matching red lipstick and a pair of golden hoop earrings.

The model looked gorgeous as she sat on a tractor wheel to promote her product

Fans were flawed by her video, with one writing: "You are so beautiful! When I was younger I had your big beauty book and would study it - and you were and still are such a beach babe!"

A second added: "The most beautiful woman that I have ever seen on a tractor!!! Happy Birthday Christie!!!"

Whilst Christie will treat fans to the best birthday show this week, she will no doubt also spend the day with her three children, Alexa, Sailor and Jack, who joined her in the Caribbean to ring in the New Year.