Abigail Leigh Spencer is an American actress. Her first major acting role was playing Rebecca "Becca" Tyree on All My Children. She later starred in Lifetime Television's original series Angela's Eyes, which was cancelled on December 1, 2006. She is also known for her role as the blogging enthusiast in Twix advertisements, and for portraying Miss Ferrell, a love interest to Don Draper on AMC's Mad Men.