Hart Can't Wait To Give Birth.

Former Sabrina The Teenage Witch star Melissa Joan Hart can't wait to give birth - because her as-yet-unborn child continually kicks her.The 31-year-old actress, who already has one son, 23-month-old Mason with rocker husband Mark Wilkerson, admits she has found her second pregnancy tough.Writing on her MySpace page, she says, "The new babe is kicking like a maniac and may actually be more active than Mason was (if that's possible)."Hart announced her pregnancy in September (07) and is due early next year (08). The actress and Wilkerson have been married since 2003.