Jessica Alba has immediately topped the list of Best Celebrity Halloween Costumes 2023 thanks to showing up at the annual Casamigos party dressed as Britney Spears during her iconic "Toxic" era. Like, blonde hair? ✔️Sparkly nude bodysuit? ✔️Britney's exact makeup look? ✔️ She committed!

FYI, Jessica wasn't the only celeb who dressed as Britney for the party. Paris Hilton also showed up in a Britney costume from the "Toxic" video:

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Meanwhile, Getty Images identified this person as Margot Robbie, which, amazing:

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And here's Machine Gun Kelly and Megan Fox:

Alberto E. Rodriguez//Getty Images

Plus, the cast of Netflix's Selling Sunset rolled in:

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Jodie Turner-Smith was there looking flawless as well:

Rachpoot/Bauer-Griffin//Getty Images

Justin Bieber was there wearing giant flippers:

Rachpoot/Bauer-Griffin//Getty Images

Cindy Crawford dressed up as Bad Sandy from Grease:

Alberto E. Rodriguez//Getty Images

And Austin Butler and Kaia Gerber showed up to support her parents:

Matt Winkelmeyer//Getty Images

ANYWAY! Circling back to Britney! Her memoir, The Woman In Me, is officially out if you haven't already bought it / read it in one sitting. The singer chatted with People about the decision to publish a memoir ahead of its publication and simply noted that, "Over the past 15 years or even at the start of my career, I sat back while people spoke about me and told my story for me. After getting out of my conservatorship, I was finally free to tell my story without consequences from the people in charge of my life."

Britney Spears The Woman in Me

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Go Britney. 🥺❤️

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