Now that 2015 is winding down, we're feeling nostalgic. This year saw a surprising resurgence of 2000s trends, thanks, in large part, to Rihanna. From denim miniskirts to trucker hats, it's clear that trends we saw in the mid-2000s are having a renaissance.

Here are nine things that have resurfaced, ten years after we were first introduced to them.

Velour tracksuits

Paris Hilton | Kanye West

Lauren Conrad

Lauren Conrad in 2005 | Lauren Conrad in 2015

Denim miniskirts

Rihanna in 2005 | Rihanna in 2015

Strapless red dresses

Jessica Simpson | Jennifer Lawrence

Man buns

Orlando Bloom | Harry Styles

Famous sisters

Mary-Kate and Ashley Olsen | Kendall and Kylie Jenner

Trucker hats

Jeremy Piven | Justin Bieber

Bold cutouts

Sheryl Crow | Gigi Hadid

Friends of Karl

Karl Lagerfeld and Lindsay Lohan | Karl Lagerfeld and Kristen Stewart