Meg Ryan joins the cast of 'How I Met Your Dad'

Actress Meg Ryan arrives for the season opening of the Metropolitan Opera in New York September 27, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT PROFILE) - RTXSQRC

Meg Ryan has joined the cast of CBS' comedy pilot "How I Met Your Dad," TVGuide.com has confirmed.

The "Sleepless in Seattle" actress will play "Future Sally," the unseen narrator and older version of Greta Gerwig's character in the "How I Met Your Mother" spin-off pilot. The part corresponds to Bob Saget's role on the original series, where Saget provided the voice of Josh Radnor's Future Ted.

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The pilot, which has yet to receive a series order, follows Sally's search for the father of her children.