We've got a new brother! Kendall and Kylie Jenner dance with the Kardashians after Kanye West's big proposal

With their designer clothes and permanent pouts they act years older than their age.
But Kendall and Kylie Jenner couldn't hide their youthful excitement as they partied moments after their big sister Kim Kardashian's engagement to Kanye West.
Kim's teenage sisters couldn't hide their excitement as they partied minutes after Kanye popped the big question with a dazzling $1.6 million, 15-carat diamond ring.

Celebration: Kendall and Kylie had a blast partying with the Kardashians at the San Francisco stadium where Kanye West popped the question to Kim, as seen in the video Kendall posted on keek.com

Kendall shared a glimpse of the fun festivities at San Francisco's AT&T Park baseball stadium by posting a 29-second video on keek.com, and brief though it was, it was
long enough to make a lot of people wish they were there too.

'Amazing!' Kendall captioned the video.
The party was hopping to the beat of live music - and so were Kendall, 17, and Kylie, 16, who were seen dancing and hugging before splitting up to do their own jigs on the grassy field.
Kendall then grabbed Kim's pal Jonathan Cheban for a few dizzying moments before zooming merrily away.

Hold on: The teenaged sisters are seen hugging and laughing while the live music beats on

 

Kendall and Kylie Jenner party after Kanye West's big proposal

Among friends: The 17-year-old Kendall grabs a hold of Kim's pal Jonathan Cheban

Make way for the revelers: The camera careens and follows a dancing guest in red

Khloe even makes a few flitting appearances as she's shown swathed in a flowing black outfit and dancing on the grass in beige high heels.
Kendall makes a return and shouts out a 'Whoa!' as she takes the camera for a spin.
The big proposal and celebration that ensued were just the healthy shot the Kardashian-Jenner clan needed following weeks of family drama, highlighted by Kris and Bruce's separation after 22 years of marriage.

Cheers: Some of the guests danced and toasted at the same time

Dancing queen: Khloe showed off some of her moves on the grassy field

Whoa: At one point Kendall took the camera for a spin

Kanye asked Kim to marry him on her 33rd birthday on Monday at the baseball park, the big question in blazing white letters on the scoreboard sign: PLEEESE MARRY MEEE!!!
The romantic rap artist then surprised his lady love with family and friends pouring from the dugouts.
Kanye spared no expense on the celebration that featured a 50-piece orchestra and fireworks.

 

Kanye postpones engagement to celebrate director

Surprise: Kanye surprised Kim on her 33rd birthday by popping the question with a dazzling, $1.6 million, 15-carat diamond ring

On Tuesday, Kim tweeted a picture of her spectacular new sparkler by Lorraine Schwartz, simply writing: 'YES!'
This will be Kim's third marriage and Kanye's first. Kim was previously wed to Kris Humphries and R&B songwriter Damon Thomas.

'YES!' Kanye's big question was loud and clear on the scoreboard sign and Kim's answer, which she later shared on Twitter, was 'YES!'

 

Kanye West proposes to Kim Kardashian with an orchestra