Kendall Jenner flashes underboob as she celebrates friend's birthday with Bella Hadid and Hailey Baldwin

Kendall Jenner, Bella Hadid and Hailey Baldwin brought out some of their best looks to celebrate their close friend's birthday!

The star-studded group stepped out at New York City's Cipriani on Wednesday night for friend Renell Medrano's birthday dinner, where they serenaded her in by a raucous rendition of "Happy Birthday" and soaked up each other's awesomeness over pasta and wine. But it was their outfits that made headlines.

SEE ALSO: Kim Kardashian shows off more than she bargained for in totally sheer black top

Jenner, in particular, truly went for it with her ensemble. The "Keeping Up With the Kardashians" star donned a teeny white crop top that flashed a bit of underboob, a green mini skirt and red heels.

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Kendall Jenner, Hailey Baldwin and Bella Hadid at friend's birthday dinner
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Kendall Jenner, Hailey Baldwin and Bella Hadid at friend's birthday dinner
NEW YORK, NY - AUGUST 02: Model Kendall Jenner is seen in SoHo on August 2, 2017 in New York City. (Photo by Gotham/GC Images)
NEW YORK, NY - AUGUST 02: Model Bella Hadid is seen on August 2, 2017 in New York City. (Photo by VMAL/Star Max/GC Images)
NEW YORK, NY - AUGUST 02: Model Hailey Baldwin is seen in SoHo on August 2, 2017 in New York City. (Photo by Gotham/GC Images)
NEW YORK, NY - AUGUST 02: Model Kendall Jenner is seen on August 2, 2017 in New York City. (Photo by VMAL/Star Max/GC Images)
NEW YORK, NY - AUGUST 02: Model Bella Hadid is seen on August 2, 2017 in New York City. (Photo by VMAL/Star Max/GC Images)
NEW YORK, NY - AUGUST 02: Model Hailey Baldwin is seen on August 2, 2017 in New York City. (Photo by VMAL/Star Max/GC Images)
NEW YORK, NY - AUGUST 02: Model Kendall Jenner is seen in SoHo on August 2, 2017 in New York City. (Photo by Gotham/GC Images)
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Hadid went for a less flashy ensemble, going all-black in a long-sleeved mini dress and knee-high boots and accessorizing with plentiful gold jewelry and a '90s-style mini purse. Baldwin got the most decked-out of the trio, rocking a strapless mini dress with a plunging neckline, sheer booties and gold hoop earrings.

The tight-knit group has been spending a lot of time together in New York City this summer, rocking a handful of head-turning fashions.

See more celebrity sightings from this week in the gallery below:

43 PHOTOS
Celeb Spotter 028: Hailey Baldwin, Kendall Jenner and Kim Kardashian
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Celeb Spotter 028: Hailey Baldwin, Kendall Jenner and Kim Kardashian
Kim Kardashian donned a matching two-piece crop top ensemble while stepping out with sister Kourtney's ex, Scott Disick. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
Hailey Baldwin showed off her six-pack abs after a workout with Kendall Jenner. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
Bella Hadid went for a retro all-denim ensemble while leaving her sister's apartment. (Photo by VMAL/Star Max/GC Images)
Kourtney Kardashian signed some autographs after arriving at LAX with sister Khloe. (Photo by starzfly/Bauer-Griffin/GC Images)
Jane Fonda got her nails done in Los Angeles. (Photo by SMXRF/Star Max/GC Images)
Hailey Baldwin paid homage to Aaliyah while out and about in NYC. (Photo by Raymond Hall/GC Images)
Khloe Kardashian paired her all-black travel ensemble with a hot pink purse. (Photo by SMXRF/Star Max/GC Images)
Scott Disick looked really happy in SoHo. (Photo by Gotham/GC Images)
Gigi Hadid went for a stripes-on-stripes look in New York. (Photo by VMAL/Star Max/GC Images)
Kim Kardashian turned heads in a sheer black bodysuit and camo shorts in NYC. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
Andy Cohen took his dog Wacha for a walk in NYC. (Photo by Gotham/GC Images)
Kendall Jenner rocked a completely sheer, floral shirt while out shopping in New York City. (Photo by Gotham/GC Images)
Lindsey Vonn and Kenan Smith left Hollywood hotspot Craig's hand-in-hand. (Photo by Hollywood To You/Star Max/GC Images)
Halle Berry looked stunning in a flowing brown mini dress outside "Good Morning America." (Photo by James Devaney/GC Images)
Larry King wasn't too pleased to see the paparazzi in Los Angeles. (Photo by gotpap/Bauer-Griffin/GC Images)
Kendall Jenner was spotted out in NYC heading into the gym. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
Kate Beckinsale looked uber chic in all-black while entering the "Jimmy Kimmel Live!" studio. (Photo by BG017/Bauer-Griffin/GC Images)
Kendall Jenner flashed some underboob in a crop top and mini skirt while at a friend's birthday dinner. (Photo by Gotham/GC Images)
Serena Williams' fiancé Alexis Ohanian stopped by "Jimmy Kimmel Live." (Photo by RB/Bauer-Griffin/GC Images)
Model Alessandra Ambrosio got a sweat in during a beautiful day in Los Angeles this week. (Photo by SMXRF/Star Max/GC Images)
Chloe Grace Moretz flashed a big smile to the paparazzi in LA as she got into her car. (Photo by BG002/Bauer-Griffin/GC Images)
Zac Efron looked like a total hunk while making his way through LAX. (Photo by SMXRF/Star Max/GC Images)
"Modern Family" actor Nolan Gould stepped out with his rumored girlfriend, model Hannah Glasby. (Photo by Hollywood To You/Star Max/GC Images)
Elizabeth Olsen was all smiles as she stopped by "Good Morning America" to promote her new film "Ingrid Goes West." (Photo by Ray Tamarra/GC Images)
Channing Tatum went super casual before his appearance on "Jimmy Kimmel Live." (Photo by RB/Bauer-Griffin/GC Images)
"The Handmaid's Tale" star Elisabeth Moss wore a pretty black, floral dress in LA. (Photo by RB/Bauer-Griffin/GC Images)
Minnie Driver went almost undetected while out in LA. (Photo by SMXRF/Star Max/GC Images)
Kendall Jenny went for an uber-casual look in NYC. (Photo by Gotham/GC Images)
Hailey Baldwin rocked a British-inspired look while leaving The Bowery Hotel. (Photo by Gotham/GC Images)
Busy Philipps rocked an edgy look while walking around SoHo. (Photo by Gotham/GC Images)
Kendall Jenner and Bella Hadid rocked colorful tops and jeans in NYC. (Photo by Gotham/GC Images)
"Younger" star Sutton Foster flashed her high-wattage smile in New York. (Photo by VMAL/Star Max/GC Images)
Bella Hadid slipped into a simple black mini dress for a friend's birthday dinner. (Photo by VMAL/Star Max/GC Images)
Brie Larson rocked a casual-chic ensemble at LAX. (Photo by SMXRF/Star Max/GC Images)
Hailey Baldwin looked stunning in an all-white ensemble complete with very ripped jeans. (Photo by VMAL/Star Max/GC Images)
Gigi Hadid didn't shy away from pattern while leaving her apartment in New York. (Photo by Gotham/GC Images)
Bella Hadid donned parachute pants in NYC. (Photo by Gotham/GC Images)
Hailey Baldwin looked super chic at a friend's birthday dinner on Wednesday night. (Photo by Gotham/GC Images)
"Real Housewives of Beverly Hills" star Kyle Richards soaked up the sun in her 'hood. (Photo by SMXRF/Star Max/GC Images)
Hailey Baldwin rocked super short shorts and an oversized sweatshirt in NYC. (Photo by Gotham/GC Images)
Eva Longoria graciously rolled her own luggage at LAX. (Photo by starzfly/Bauer-Griffin/GC Images)
Jesse Metcalfe looked hot as ever making a promotional stop in NYC. (Photo by Janet Mayer/Star Max/GC Images)
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