AceShowbiz -

Congratulations are in order for actor Cheyenne Jackson and boyfriend Jason Landau. The "30 Rock" alum, 39, is confirmed to have married his fiance in an outdoor wedding at a friend's estate in Encino, Los Angeles on Saturday, September 13.

The couple swapped vows in front star-studded crowd that included Jesse Tyler Ferguson, Leah Remini, Rebecca Romijn and husband Jerry O'Connell, Alicia Silverstone, Jane Lynch, and Kenneth Cole. The couple's dog Billie Jean also took part in the ceremony.

Jackson wore a black Calvin Klein tux and Landau donned John Varvatos. The nuptials took an emotional turn when both of their mothers came to the altar and gave them kisses on the cheek to symbolize that they've been given away to one another.

It's the second marriage for Jackson. The actor and his first husband Monte Lapka split in 2013 after being together for 13 years and married for two. He met his new love in rehab for alcohol addiction last year. "This means a new beginning for us," he tells PEOPLE of his wedding to Landau. "It was love at first sight and this is just the culmination of that."