Britney Spears was giving us some serious "Baby One More Time" vibes at the iHeartRadio Music Festival!

The blonde beauty performed in pigtails, instantly reminding us of the '90s pop star we fell in love with.

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Wearing a black bandage halter top with matching feather skirt, Britney put on quite the show in Las Vegas, complete with throwback songs such as "Toxic" and "(You Drive Me) Crazy."

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The mother-of-two has come a long way since her very public breakdown in 2007 — and has been looking better than ever in recent months.

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And fingers crossed, a collaboration with ex Justin Timberlake is right around the corner!