Kyle MacLachlan & His Wife Welcome a Baby Boy

Desiree Gruber and Kyle MacLachlan in Southampton May 24

Shane Gritzinger/WireImage

updated 07/28/2008 AT 2:00 PM ET

originally published 07/28/2008 AT 2:15 PM ET

Desperate Housewives star Kyle MacLachlan and his producer wife Desiree Gruber have welcomed their first child, a boy, the actor’s rep tells PEOPLE.

Callum Lyon MacLachlan was born Friday in Los Angeles and weighed 8 lbs, 6 oz.

MacLachlan, 49, whose next film is The Sisterhood of the Traveling Pants 2, and Gruber, 41, an executive producer of Project Runway, have been married for six years.

MacLachlan, who returns to Desperate Housewives this season, told PEOPLE in May that the couple – who knew they were having a boy – were still trying to settle on a name. The actor said he was excited about fatherhood.

“It’s one of those crazy things,” he said. “I’m having the best time watching her body change. I’m paying attention to little kids now.”

• Reporting by JULIE JORDAN

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