Winslow / Massie / Splash News 1 / 4
Winslow / Massie / Splash News 1 / 4

"American Idol' runner-up Crystal Bowersox has tied the knot!

The season 9 finalist wed her longtime pal, musician Brian Walker, Sunday in Chicago, a source confirms to

Sixty family members and friends looked on as the couple, who have been friends for six years, said "I do." The singer's season 9 "Idol" pal Didi Benami and "It's Always Sunny in Philadelphia" actor Lance Barber were also in attendance.

Bowersox's 1-year-old son, Tony, served as ring bearer.

"Officially walkersox," the 25-year-old bride Twittered after swapping vows Sunday.

It was a whirlwind romance for the couple, who announced their engagement in September, four months after Bowersox split from her baby's father the day before the "Idol" finale.

"It was bad timing," she told Ellen DeGeneres of her May 2010 split. "He's a small town guy, and I don't blame him for anything."

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