Two of a Kind: Matchy-Matchy Celebrity Couples

Prince William and his wife, Catherine, sported matching purple sweaters with exposed collars while spending time at the queen's Scottish residence in 2011.

At the 2001 AMAs, Britney Spears and Justin Timberlake went all-out denim. Hat, purse, blazer — everything.

At a Southampton, NY, Legally Blonde screening in 2001, Reese Witherspoon and Ryan Phillippe sported coordinating stripes.

Jennifer Aniston and Brad Pitt went for a tan monochrome look for the LA premiere of The Mexican in 2001.

At the 2004 MTV VMAs, Jay Z and Beyoncé Knowles glammed it up in gold.

For the 2003 MTV Movie Awards, Ryan Reynolds and Alanis Morissette wore leather on top with similar necklaces.

For the Las Vegas premiere of Runner, Runner in September 2013, Justin Timberlake and his wife, Jessica Biel, both suited up.

In June 2005, Tom Cruise and Katie Holmes were in sync, rocking black jackets, shades, and jeans during a trip to Paris.

For the LA premiere of Layer Cake in 2005, Courteney Cox and David Arquette wore matching white pants with striped tops.

Lace-ups, jeans, leather jackets, aviators? Check! Justin Theroux and Jennifer Aniston were right in step while out in NYC in September 2011.

Wearing ponytails with black-on-black outfits, Brad Pitt and Angelina Jolie were well coordinated for the Paris premiere of World War Z in June 2013.

Sporting distressed jeans, white t-shirts, and long back overcoats, Kanye West and Kim Kardashian were perfectly in step while out and about in NYC.