She took the plunge in a low-cut frock for a lunch with her sisters in New York earlier on Thursday.

But Kim Kardashian was all about the leg later that evening.

The 33-year-old donned a fitted black frock that sported a thigh-high slit as she arrived at the Gansevoort Hotel in Manhattan, ready to begin celebrations of her sister Khloe's 30th birthday party.

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Flaunting what she's got: Kim Kardashian flashed her toned leg in a a fitted black frock that sported a thigh-high slit as she arrived solo at the Gansevoort Hotel in Manhattan on Thursday

The reality star showed off her toned leg in the racy dress, which sported a halter neck and three gold buttons above the slit.

Kim added black strappy heels but kept the rest of her accessories to a minimum, allowing the frock to take centre stage.

The mother-of-one wore her dark hair loose and sleek and opted for a sultry smokey eye and nude lips.

Kim was later seen leaving the hotel with her mother Kris Jenner and sisters Kourtney, Kylie and Kendall.

The troop then made their way to Don Conqui restaurant in City Island in the Bronx.

A Keeping Up With The Kardashians film crew was seen catching the action while Kim appeared to have a heated conversation on her cellphone.

Earlier, Kim and her sisters Khloe and Kourtney kept up with their tradition of family bonding as they were spotted grabbing lunch at a French bistro in New York.

The trio enjoyed a meal at Little Prince Restaurant in the upmarket neighbourhood of Soho as they each showcased their own unique and effortlessly chic sense of style.

Khloe displayed her long legs in a pair of skinny jeans, as she elevated her already statuesque physique in a pair of stilettos.

Completing the 29-year-old's attire was a low cropped black tank top and comfy cardigan.

Meanwhile Kim, who pranked her fans on Wednesday by wearing a blonde wig, had gone back to the dark side as she ditched the fake hair while out and about.

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