News Kirstie Alley Welcomes Grandson Waylon Tripp Parker -- See the Sweet Pic! By Raphael Chestang 3:28 PM PDT, June 21, 2016 Getty Images Kirstie Alley is a grandmother! The 65-year-old actress announced on Tuesday that her son, William True Stevenson, recently became the father of a bouncing baby boy. PICS: Hollywood's Cutest Kids"When your son has a son ... bliss ... yes this is my secret happy news as promised," Alley tweeted. "Welcome Waylon Tripp Parker." When your son has a son...bliss...yes this is my secret happy news as promised ...Welcome Waylon Tripp Parker pic.twitter.com/hTvfyppX4O— Kirstie Alley (@kirstiealley) June 21, 2016Alley posted a photo with the tweet, featuring William, 23, resting with Waylon on his bare chest.William is Alley's adopted son with ex-husband, Parker Stevenson. The former couple made William a part of their family in 1992 and adopted daughter Lillie, 22, in 1994.EXCLUSIVE: Kirstie Alley Is Up for a 'Cheers' Reunion, But Has Some Requirements This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page.