@austinkingswift / Instagram 1 / 12
@austinkingswift / Instagram 1 / 12

Ain't no party like a Taylor Swift party!

After completely cleaning up (winning eight awards) at the Billboard Music Awards in Las Vegas on May 17, Taylor decided to keep on celebrating, attending a private fun-filled party with a few of her famous friends.

The "Style" singer, following a hug and kiss-fest with boyfriend Calvin Harris and the premiere of her "Bad Blood" video at the BBMA's, headed to the extravagant Nobu Villa at Nobu Hotel Caesars Palace to commence the celebrating.

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Those attending the bash: Ed Sheeran, who technically rented out the villa, Adrian Grenier, One Direction's Louis Tomlinson, Liam Payne, and Niall Horan, Hailee Steinfeld, Taylor's brother Austin Swift, and, of course, Taylor's beau.

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And, those attending couldn't resist but share their revelry on social media -- the Instagram pictures showed us how inexplicably cute Taylor and Calvin are together, as they dressed up in costumes at the party's photo booth, even Eskimo kissing with their noses in another photo.

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"They're making time for each other in a way that other guys she's been with haven't before," a source told Us Weekly of Taylor and Calvin. "They're taking it one step at a time."