Nostalgia alert! Check out the red carpet style at the 2005 Teen Choice Awards

Ten years ago, "Napoleon Dynamite" was everyone's favorite flick, Ashton Kutcher was engaged to Demi Moore, and "O.C." cutie Rachel Bilson won the Teen Choice Award for Choice Hottie.

Rachel McAdams, hot off the heels of "The Notebook" success, landed a smooch on Ryan Reynolds in front of his future wife Blake Lively -- and Ryan Gosling and Eva Mendes, who now have a baby together, attended the event solo.

A lot has definitely changed in the last decade, but perhaps none more than the red carpet fashion. Spaghetti straps, denim, frosted tips were among the year's hottest styles. Take a walk down memory lane and get nostalgic on the 2005 Teen Choice Awards red carpet in the gallery above.

RELATED: Teen Choice Awards' greatest red carpet moments through the years

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