Kourtney Kardashian stuns in little black dress at PrettyLittleThing launch event

Kourtney Kardashian shone bright on her big night!

The "Keeping Up With the Kardashians" scene-stealer stepped out on Wednesday night to celebrate the launch of her collaboration with PrettyLittleThing, and she deservedly stole the show in a sparkling little black dress.

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Kardashian increasingly toned physique was firmly on display in the slinky number that featured a low neckline and spaghetti straps. She finished off the look with a sleek high pony and strappy black heels. 

See Kourtney Kardashian's sexy look:

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Kourtney Kardashian at Pretty Little Things launch
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Kourtney Kardashian at Pretty Little Things launch
LOS ANGELES, CA - OCTOBER 25: Kourtney Kardashian attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Kourtney Kardashian attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Kourtney Kardashian attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Kourtney Kardashian attends the launch of PrettyLittleThing by Kourtney Kardashian on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Kourtney Kardashian attends the PrettyLittleThing By Kourtney Kardashian Launch on October 25, 2017 in Los Angeles, California. (Photo by JB Lacroix/ WireImage)
LOS ANGELES, CA - OCTOBER 25: Kourtney Kardashian attends the launch of PrettyLittleThing by Kourtney Kardashian on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Kourtney Kardashian attends the launch of PrettyLittleThing by Kourtney Kardashian on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Kourtney Kardashian attends the launch of PrettyLittleThing by Kourtney Kardashian on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
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The 38-year-old mother-of-three wasn't the only star to celebrate her launch, of course. Other celebrities attended the event at Poppy in Los Angeles to help the oldest Kardashian sister celebrate her new fashion endeavor.

Lori Loughlin and look-alike daughter Olivia Jade attended the event together and looked like total twins, while Rob Kardashian's ex Adrienne Bailon supported her old pal. Also there? "Vanderpump Rules" star Lala Kent, singer Christina Milian and Chantel Jeffries, who models for Khloe Kardashian's Good American clothing line.

See all of the red carpet looks:

18 PHOTOS
Pretty Little Things and Kourtney Kardashian launch event: Red carpet arrivals
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Pretty Little Things and Kourtney Kardashian launch event: Red carpet arrivals
LOS ANGELES, CA - OCTOBER 25: Lori Loughlin (L) and Olivia Jade attend the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Christina Milian attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Adrienne Bailon attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Chantel Jeffries attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Lala Kent attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Amanda Stanton attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Kourtney Kardashian attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Olivia Jade attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Laura Govan attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Matt Sarafa attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Lindsey Pelas attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Nicole Williams attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Montana Brown attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Natalie La Rose attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Tiffany Stanley attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Umar Kamani (L) and guest attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
LOS ANGELES, CA - OCTOBER 25: Chanel West Coast attends the launch of PrettyLittleThing by Kourtney Kardashian at Poppy on October 25, 2017 in Los Angeles, California. (Photo by Rich Fury/Getty Images)
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