Britney Spears turns 33 today, and what better way to celebrate the sassy Sagittarian's birthday than with a gallery of her wildest adventures over the years?

From her racy music videos to causing chaos in Hollywood, Britney certainly knows how to entertain us -- check out her top ten most memorable moments in the gallery below!

    #10: On July 18, 2007 Britney stripped down to her underwear and took a dip in the ocean with her friend Shannon Funk. Brr!!!

#9: Britney sunbathes at a hotel in Santa Monica and covers up her tummy on March 21, 2005 -- this was actually the first photo of the pop star's baby bump! Just weeks later it was confirmed that she and hubby Kevin Federline were expecting their first child together!

    #8: Remember when Britney wore a pink wig around town, spoke in a British accent and bought mass quantities of Red Bull? Seems like decades ago, but this was in January of 2008...

#7: Britney went to rehab in February of 2007 after her infamous public meltdown/head shaving incident.

#6: Britney and then-boyfriend Kevin Federline made their first public appearance together in April of 2004. The two spent the first part of the day holed up in her hotel room, and later they went for a romantic walk on the beach.

#5: In April of 2007 Britney chatted exclusively with X17online about her stint in rehab...and all sorts of other crazy things!

    #4: Ah, that night in November of 2006 when Britney famously partied with Paris Hilton and Lindsay Lohan -- and forget her panties!

#3: In February of 2006 Britney drove her SUV on the Pacific Coast Highway with baby Sean Preston on her lap. Though the bodyguard was in the car with her, Brit came under fire for putting her young son's life in danger.

#2: Just two days before heading to rehab in February of 2007, Britney went on a rampage and attacked an empty car with an umbrella...

Click thru for the most memorable Britney moment of all time!