She always turns heads on and off the tennis court.

And Venus Williams, 37, suffered an awkward wardrobe malfunction as she flashed her knickers on Thursday night while attending the 20th annual Citi Taste of Tennis at Cipriani 42nd Street in New York.

The tennis pro was glammed up to the max in a slinky black dress while she was joined at the event by her much more casually dressed sister Serena Williams, 39.

Oops! Venus Williams, 37, suffered a wardrobe malfunction as she flashed her knickers on Thursday night while attending the Citi Taste of Tennis at Cipriani 42nd Street in New York

Venus looked sensational as she opted to go braless in her plunging black frock, with her athletic physique on full display.

But, thanks to her extremely long pins, the wrap detail of the garment fell short, leaving her black knickers exposed.

The sportswoman opted for dazzling comfort in the form of a bejewelled pair of flat sandals, and accessorised with large hoop earrings.

Venus styled her raven tresses into a voluminous high ponytail and looked radiant with a flawless make-up application, as she tasted food prepared by experts.

Sister sister: The tennis pro was glammed up to the max in a slinky black dress while she was joined at the event by her much more casually dressed sister Serena Williams, 39

Leggy! Thanks to her extremely long pins, the wrap detail of the garment fell short, leaving her black knickers exposed

Having fun: Venus looked sensational as she opted to go braless in her plunging black frock, with her athletic physique on full display

While her younger sister oozed glamour, Serena kept things casual in a pair of skin-tight leggings with an open braiding effect on either side, and an oversized polo-shirt.

Adding a splash of colour to her sporty ensemble, the 23-time grand slam champion wore a vibrant pair of pink and blue trainers.

The mother-of-one styled her blonde tresses into dishevelled curls and completed her glowing make-up look with a fuchsia pout.

Sports luxe: While her younger sister oozed glamour, Serena kept things casual in a pair of skin-tight leggings with an open braiding effect on either side, and an oversized polo-shirt

Stylish: Adding a splash of colour to her sporty ensemble, the 23-time grand slam champion wore a vibrant pair of pink and blue trainers

Glam: The sisters looked stunning with flawless make-up applications (Pictured L-R Masaharu Morimoto, Venus Williams, Richard Blais & Serena Williams)

The 20th Annual Citi Taste of Tennis New York kicked off tennis in NYC this summer on Thursday.

The evening featured signature cuisine from the city’s leading chefs and appearances from tennis stars.

Meanwhile, in June, Venus and her boyfriend Nicky Hammond reportedly called it quits after two years together.

According to Page Six, the couple broke up, but sources told the website the exes still remain friends.

Loving life: Venus styled her raven tresses into a voluminous high ponytail and looked radiant with a flawless make-up application, as she tasted food prepared by experts

Taste test: The 20th Annual Citi Taste of Tennis New York kicked off tennis in NYC this summer, and featured signature cuisine from the city’s leading chefs