Katherine Heigl

Katherine Heigl is on the cover of the August issue of InStyle magazine. (InStyle)

May 31, 2008: Katherine Heigl arrives at the 7th Annual Chrysalis Butterfly Ball in Los Angeles. ( AP)

Oct. 22, 2008: Katherine Heigl and her dog pose on the press line at the Peter Alexander boutique store launch in Los Angeles. ( AP)

January 7: Katherine Heigl poses with her award for Favorite Comedy movie for "27 Dresses" at the 35th annual People's Choice awards in Los Angeles. ( Reuters)

December 11, 2008: Katherine Heigl poses at the premiere of the movie "Marley & Me" at the Mann Village theatre in Westwood, California. ( Reuters)

Aug. 16, 2008: Katherine Heigl poses on the press line at the 3rd annual "Hot in Hollywood" charity event benefiting the AIDS Healthcare Foundation in Los Angeles. ( AP)