Giving plenty of reason to celebrate during this year's holiday season, a long list of Hollywood stars are among those celebrating Christmas with a new special someone for the very first time.

Topping the list of 2011's Tinseltown hookups are Justin Bieber and Selena Gomez, who weathered false baby allegations while closing out the year as young Hollywood's most-adored duo.

Other big names falling in love during the course of the past twelve months include George Clooney and Stacy Keibler, who ventured to Cabo to celebrate the holidays, as well as "Green Lantern" co-stars Blake Lively and Ryan Reynolds, "Dark Tide" lovers Halle Berry and Olivier Martinez, and "Wanderlust" castmates Jennifer Aniston and Justin Theroux.

Meanwhile, Kristin Cavallari and her football star beau Jay Cutler made it through a called-off engagement to reunite - with the pair once again in the planning stages of what's sure to be a fabulous walk down the aisle.

The remaining list of new items joining together in 2011 includes Vanessa Hudgens and Austin Butler, Emma Stone and Andrew Garfield, Ryan Gosling and Eva Mendes, Ashlee Simpson and Vincent Piazza, Emma Roberts and Chord Overstreet, Eva Longoria and Eduardo Cruz, Nick Jonas and Delta Goodrem, Kate Bosworth and Michael Polish, Drew Barrymore and Will Kopelman and Kate Winslet and Ned Rocknroll.