There are some things that only true, dedicated Britney Spears fans will understand. Her career spans decades, moving from plaid and pigtails to sequined bodysuits to the fierce look she has today — and if you're anything like us, you've covered all those style bases with your Halloween costumes over the years. From the schoolgirl era to the VMAs stage, Britney's proven time and time again why she's a pop icon. And with her current stint in Sin City, she's joined the ranks of other music legends like Celine Dion and Elton John. To celebrate her 33rd birthday, let's take a trip down memory lane with the journey of being a Britney fan — in GIFs.
Source: Getty / Kevin Kane