Inside the Jeremy Scott x UGG Launch Party

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Believe it or not, New York Fashion Week is less than a week away and with it will come some of the hands-down best celebrity-packed events of the year.

And while the social scene has been pretty quiet this summer, things slowly began to pick up last Saturday, when Jeremy Scott hosted friends in L.A. for the launch of his new collaboration with UGG. A major Scott muse, Katy Perry was of course on hand, along with Jasmine Saunders and Paris Jackson. If you haven’t checked out the collection, it’s pretty glitzy.

On Sunday, a similar crowd headed to watch Perry host the Video Music Awards. After the show, stars flocked to several after-parties, though it was the Republic Records and Cadillac party, hosted in part by Fiji Water, that had the most star-power. Guests included Millie Bobby Brown, Shawn Mendes, Hailee Steinfeld, and DNCE.

Later, Reese Witherspoon continued to promote her new romantic comedy, Home Again, this time with a twinning red carpet moment with her daughter Ava Phillippe in L.A.. Back in New York, Shania Twain revved things up at the opening ceremony of the U.S. Open, where Katie Couric and Vera Wang were also fabulously on hand.

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Scroll down for the best parties of the week.

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Paris Jackson, Jeremy Scott, and Jasmine Saunders

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at the Jeremy Scott x UGG collection launch party.

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Jeremy Scott and Katy Perry

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at the Jeremy Scott x UGG collection launch party.

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DNCE

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at the Republic Records, Cadillac, and Fiji Water After-Party.

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Millie Bobby Brown and Shawn Mendes

Jonathan Leibson/Getty

at the Republic Records, Cadillac, and Fiji Water After-Party.

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Hailee Steinfeld

Jonathan Leibson/Getty

at the Republic Records, Cadillac, and Fiji Water After-Party.

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Heidi Klum and Mel B

Jonathan Leibson/Getty

at the Republic Records, Cadillac, and Fiji Water After-Party.

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Shania Twain

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at the opening ceremony of the U.S. Open.

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Katie Couric

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at the opening ceremony of the U.S. Open.

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Vera Wang

Jim Spellman/WireImage

at the opening ceremony of the U.S. Open.

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Reese Witherspoon and Lake Bell

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at the L.A. premiere of Home Again.

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Reese Witherspoon and Ava Phillippe

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at the L.A. premiere of Home Again.

Replay gallery

Star-Studded: The Best Parties This Week

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Paris Jackson, Jeremy Scott, and Jasmine Saunders