Brand and Perry go sledding on Hampstead Heath in London. The pair got into the festive spirit, laughing and joking with locals, before taking the reins to a sled and shooting down the hill in 2007.
Brand and Perry take a walk in the paparazzi-laden streets of Los Angeles on January 17th, 2010.
Brand and Perry arrive at the premiere of Get Him to the Greek at the Greek Theatre in Los Angeles on May 25th, 2010.
Brand and Perry attend the MTV Europe Awards at the La Caja Magica in Madrid, Spain on November 7th, 2010.
Perry and Brand attend Katy's "California Gurls" party at in Hollywood on June 6th, 2010.
Perry and Brand share a romantic moment at Art of Elysium's 3rd Annual Black Tie Charity Gala in Beverly Hills on January 16th, 2010.
The couple shows off their shared sense of humor by loving up the Biebs at the American Music Awards on November 21st, 2010.
The pair poses for photos with Perry's grandmother at her 90th birthday celebration at Planet Hollywood in Las Vegas on January 12th, 2011.
Brand and Perry attend the European premiere of Brand's film Arthur in London on April 19th, 2011.
The Arthur premiere lovefest continues as the pair shares a moment on the red carpet in London on April 19th, 2011.
Perry and Brand arrive at the the 28th Annual MTV Video Music Awards in Los Angeles on August 28th, 2011.
Perry and Brand take the stage together at the 2011 MTV Video Music Awards in Los Angeles on August 28th, 2011.
Perry and Brand share a kiss at the 3rd Annual "Change Begins Within" Benefit Celebration presented by the David Lynch Foundation in Los Angeles on December 3rd, 2011.
Brand and Perry go for a bicycle ride in New York's Tribeca neighborhood on October 22nd, 2011.