Success. Heigl became known for playing Izzie on Grey's Anatomy, but it was the 2007 film Knocked Up that sent her to the top. She reportedly earned $300,000 for that movie, but 2008's 27 Dresses shot her salary up to $6 million. Not bad for a one-year raise! Josh has enjoyed plenty of success with his music career. None of his albums have been huge blockbusters, though they have shown up on Top Heatseekers charts, and his songs have been featured in movies and television shows. The royalties on those probably aren't too shabby.
Attractiveness. Katherine has developed an old-Hollywood style that suits her blonde hair and glowing skin perfectly. She's also received some positive attention for keeping a healthy figure in the skinny-obsessed world of stardom. Kelley's a musician, so his looks aren't paying the bills. Still, his laid-back, often disheveled style has boyish character of its own.
Popularity. Last month, around 246,000 people searched Google to read more on Heigl, while 74,000 searched for Kelley. Those figures place them halfway down our list of the most popular celebrity couples.
Staying Power. Heigl and Kelley met in 2005 when Katherine appeared in his music video for the song "Only You" (see the video below). Though Katherine's romantic life before Josh hasn't been highly-publicized, she does have a few Hollywood fellas in her past. She dated Joey Lawrence and Roswell costar Jason Behr before tying the knot with Kelley in 2007.
Compatibility. A quick look at the stars proves that these two are meant to be. Katherine's a Sagittarius, and Josh is an Aquarius, meaning both partners are independent and enthusiastic. It's perfect: They don't have to rely on each other for anything!