Tennis star to sign books at Costco

Martina Navratilova will sign copies of her book "Shape Your Self" at 3 p.m. Sun., April 9 at Costco Wholesale, 5700 Lindero Canyon Road, Westlake Village.

The 49-year-old tennis star- winner of 20 Wimbledon titles and 58 Grand Slam titles-still plays tennis competitively, and also skis, plays hockey and basketball.

She's often asked how she stays in shape, and her book provides her answer, citing the importance of choosing organic foods and having a fitness plan.