Paris, Kim & Nicole Hit Up Britney's Femme Fatale show in Los Angeles

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It seems anyone who's anyone attended Britney's epic Staples Center concert in LA, as evidenced by the major activity in the celebrity twitterverse last night.

Former BFFs Paris Hilton and Nicole Richie both proclaimed their Britney love, with Nicole going above and beyond, showing off some of her pre-concert dance moves to the pop princess' iconic "I Am a Slave 4 U," in the following video, along with the message: "In honor of my queen, @BritneySpears - Can't wait to dance tonight!"

Paris tweeted, "Loves it! @britneyspears performing @rihanna's song S&M! Her outfits are amazing! Who did the costume design for her tour? Love!- Paris."

Hilton's sister Nicky joined in with: "@britneyspears show was amazing! She looked and sounded beautiful! Great concert!"

Kim Kardashianwrote, "Seriously u guys, tonight @britneyspears just had the best concert ever! She killed it in LA! Proud of u doll ;-) must see concert!" She also added the following nod to her fiance, "I'm a slave for you... @KrisHumphries."