Getting in a fitness outing before the night’s celebratory festivities, Reese Witherspoon was busy jogging with Jim Toth in Santa Monica on Friday (December 31). The “Legally Blonde” babe looked fit and fine in her running gear as she joined her agent fiance for the calorie-burning adventure before heading home to prep for the New Year’s Eve holiday

Making for quite the momentous past year, Jessica Simpson and fiance Eric Johnson were out strolling the streets of Aspen, Colorado on Friday afternoon (December 31). The recently engaged pair enjoyed their last moments of 2010 together, as the twosome walked hand in hand while bundled up for the Rocky mountain winter weather

Opting to ring in the new year in sunny Florida, Maria Menounos was spotted flaunting her fit and fine beach body in Miami on Friday afternoon (December 31). Clad in an oh-so-hot black bikini, the TV personality romped around the sandy shoreline while partaking in a game of football with “No Ordinary Family” actor Michael Chiklis

Gearing up for her all-important hosting efforts, Kim Kardashian was spotted being picked up by a limo to be taken to LAX Airport in Los Angeles on Friday (December 31).

Stepping out for a midday meal, Christina Aguilera ventured out for lunch at the Ivy Restaurant in West Hollywood on Friday afternoon (December 31).

Opting to ring in 2011 in the States, Emma Watson was spotted arriving at LAX International Airport in Los Angeles, California on Friday (December 31).

Ready to ring in another year, Miley Cyrus was spotted out and about in Los Angeles, California on Friday (December 31). Tossing out her penchant “peace” sign, the “Last Song” star was busy cruisin’ around town while gearing up for the parties to be had as 2011 gets underway.

Getting an early start to the weekend New Year’s celebrations, Ashley Greene and Joe Jonas were spotted out clubbing in Hollywood on Thursday night (December 30). The cute couple ventured over to Premier Nightclub, as they joined fellow revelers including Rachel Leigh Cook for an evening of drinks and conversation at the popular Tinseltown night spot. The sighting comes as Ashley and Joe stirred up engagement rumors upon arriving to LAX Airport earlier in the week due to Miss Greene’s ring finger jewelry

Gearing up for a big night, Kourtney Kardashian and Scott Disick were spotted out and about in Miami, FL on Friday (December 31).

Gearing up for a big night, Kourtney Kardashian and Scott Disick were spotted out and about in Miami, FL on Friday (December 31).