Everwood actress Emily VanCamp is to join the regular cast of Brothers & Sisters.

VanCamp will star as Rebecca Harper, the daughter of William Walker (Tom Skerritt) and mistress Holly Harper (Patricia Wettig), whose existence has been kept secret for twenty years.

This is VanCamp's second time working with executive producer Greg Berlanti, a former writer on the now-axed cult drama.

Holly will first appear on-screen later this season.