Exclusive: Ben and Kate Recruits Jane Seymour as BJ's 'Sexy' Mom -- Plus a Sunny Star Stops By

Jane SeymourBen and Kate‘s wild bartender BJ might want to cool it on the shots for a while, because her mum is coming to town.

Jane Seymour will guest-star on the Fox comedy as the mother of Lucy Punch’s character, TVLine has learned exclusively.

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Mom Wendy, a sexy, middle-class Brit with plenty of affectations and bourgeois attitudes, will discover that her daughter is keeping some secrets from her.

While known as Dr. Quinn, Medicine Woman‘s titular frontier doc, Seymour recently has shown off her range with TV gigs on Franklin & Bash, Castle, How I Met Your Mother and Smallville.

Additionally, David Hornsby (It’s Always Sunny in Philadelphia, How to Be a Gentleman) will appear in the same installment as a wealthy entrepreneur whose fortune is built on an idea his former friend Ben (Nat Faxon) sold him for peanuts.

The episode is tentatively slated to air in early 2013.

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