sunglasses Rebecca Gayheart pegnant stripes jeans purse

Rebecca Gayheart just announced she's pregnant with her second child ... now we're just waiting for the baby bump to show!

And, apparently Rebecca loses things easily ... we can't figure out why else she keeps her keys around her neck!

Rebecca, 39, and husband Eric Dane, 38, already have a 16-month-old daughter, Billie Beatrice. The couple married in October 2004.

See more pictures of Rebecca shopping after the jump.