‘How I Met Your Mother’ Casting News: Ashley Benson to Guest, Rachel Bilson & Ray Wise to Return

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Pretty Little Liars star Ashley Benson is heading to How I Met Your Mother for a guest role. Stay tuned to the January 21 episode to find out if she could possibly be the “Mother.” In addition, Rachel Bilson and Ray Wise will be reprising their roles on the show, as well!