Celebrate the pop icon's birthday with a look back at her unforgettable 2000s fashion.

As fashion continues its inevitable <a href="https://www.lofficielusa.com/fashion/gen-z-y2k-millennial-90s-fashion-nostalgia">cycle</a>, <a href="https://www.lofficielusa.com/beauty/y2k-2000s-hair-trend-tiktok-celebrity">Y2K</a> style&mdash;in its glizty, ultra-feminine glory&mdash;has found its way back to the mainstream, dominating runways and social media feeds alike. With that comes the resurged veneration of <a href="https://www.lofficielusa.com/fashion/yoga-pants-flared-leggings-trend-emma-chamberlain-y2k">2000s</a> icons like <a href="https://www.lofficielusa.com/fashion/editorial-a-not-so-simple-life-paris-hilton-nicole-richie">Paris Hilton and Nicole Richie</a>, but no one better exemplifies the time period as a whole than <a href="https://www.lofficielusa.com/fashion/britney-spears-stars-in-new-kenzo-campaign">Britney Spears</a>. Once plastered on posters and magazine spreads in teen girls&#39; rooms, the girl next door turned pop princess will always be remembered for hits like <a href="https://www.youtube.com/watch?v=CduA0TULnow&amp;ab_channel=BritneySpearsVEVO">&quot;Oops!...I Did it Again&quot;</a> and <a href="https://www.youtube.com/watch?v=C-u5WLJ9Yk4&amp;ab_channel=BritneySpearsVEVO">&quot;...Baby One More Time.&quot;</a>&nbsp;Along with these, Spears was the peak of early aughts fashion, frequently outfitted in crop tops, <a href="https://www.lofficielusa.com/fashion/how-to-style-baggy-pants-instagram">low-rise denim</a>, and plenty of <a href="https://www.lofficielusa.com/beauty/tooth-gem-celebrity-trend-interview-diamond-dentist">bedazzling</a>.

To celebrate the singer&#39;s 39th birthday,&nbsp;L&#39;OFFICIEL&nbsp;gathers some of her best style moments to replicate as Y2K style reigns supreme.&nbsp;

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Britney Spears' Best Y2K Style Moments

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