Posted by babu 4:01pm GMT
When it comes to welcoming the new year, all style rules that may have been established in the last go out the door!
Get a closer look at Nicole Richie, Leighton Meester, Fergie and more in this Celebrity New Year's Party Style gallery on All the Looks.
Photos (left to right): Denise Truscello/WireImage; Paul Warner/WireImage; Chris Weeks/WireImage
Posted by babu 10:00am GMT
Wishing you a happy and healthy New Year!
Return to All the Looks Insider January 4 to catch up on all the celebrity New Year looks you're going to miss while partying in style.
Photo: Gabriela Maj/Getty Images
!["How I Met Your Mother"](http://mylt.ltcdn.com/d6/sites/mylifetime.com/files/images/imagecache/carousel_159x119/2011/01/12/HIMYM-159x119.jpg ""How I Met Your Mother"")
