Of the few things only us women understand, leggings, tights and spandex rank pretty high. The comfy material can easily take us from day to night, summer to winter, casual to glam. It's our workout gear, but can also be dressed up and deemed appropriate for the fanciest of holiday parties.
Behold, recent celebrities who totally get it:
Eliza Doolittle at BBC Radio 2 Studios in London, December 16, 2013.
Tulisa Contostavlos going bowling in London, December 15, 2013.
Jessica Alba in Brentwood, December 13, 2013.
Denise van Outen leaving KISSFM in London, December 14, 2013.
Daisy Lowe out in London, December 10, 2013.
Maitland Ward at The Hobbit game launch in Hollywood, December 11, 2013.
Katy Perry leaving London's KISS FM Radio Station on December 10, 2013.
Later that night out to dinner in London with Ellie Goulding
Katy Perry at London Studios, December 11, 2013.
Holly Willoughby headed to Nicole Appleton's birthday celebration in London on December 8, 2013.