Kim Kardashian

Vivien Killilea/Getty Images

Kim Kardashian opted for an all-black, chic look on Saturday, Valentine's Day, which she spent with her family and celebrity friends during New York Fashion Week.

The 34-year-old Keeping Up With the Kardashians star wore a cleavage-baring spaghetti strap cut-out gown with a sheer, long sleeve overlay and had her newly cut shoulder-length hair styled sleek and straight. She attended the Alexander Wang fall 2015 fashion show with husband and fashion designer Kanye West and their 1-year-old daughter North West and watched sister Kendall Jenner walk the runway.

The toddler, who received a very cute Valentine's Day gift earlier in the day, got a little cranky at the show, following a brief bout of tears at her dad's Adidas show on Thursday.

Later on Saturday, Kardashian and Kanye were spotted at another fashion show, at an eyewear center in Rockefeller Plaza and also at the upscale restaurant The Spotted Pig, where they hung out with celebrities such as Justin Bieber, 20, and Dave Chappelle, 41. The couple did not stay at the party long and guests appeared surprised and delighted to see them, a source told E! News.

Kardashian shared on her Instagram page photos from the party, including a pic of herself and Kanye exchanging a sweet kiss.

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A photo posted by Kim Kardashian West (@kimkardashian) on

VDay Love ????

A photo posted by Kim Kardashian West (@kimkardashian) on

Chapelle Show

A photo posted by Kim Kardashian West (@kimkardashian) on

Kanye gave Dave the shoes off his feet #Yeezys

A photo posted by Kim Kardashian West (@kimkardashian) on

Bieber also shared on his own page a pic of himself with Kanye and Chappelle, saying, "With good people."

—Reporting by Beth Sobol

Season 10 of Keeping Up With the Kardashians will premiere this spring!

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