As confirmed by ITV, classic film star Shirley MacLaine will guest star on Brittish drama series "Downton Abbey". She'll show up in season three as Lady Grantham's mother. MacLaine is known for her roles in movies such as "Sweet Charity", "The Apartment" and "Terms Of Endearment".
I'm really excited about this! However, I'm still hoping Joan Collins will get to guest star on this wonderful series!
