SHeDAISY lead singer Kassidy Osborn has married her longtime boyfriend Derek Williamson. In a private ceremony attended by their families, the couple exchanged vows at the LDS Temple in San Diego, Calif.

"For being one of the most important days of my life, it couldn't have been more perfect and beautiful!," says Kassidy.

Kassidy and sisters Kristin and Kelsi are getting ready to release SHeDAISYy's fifth album on Lyric Street Records. Among their summer tour dates will be a featured performance in their home state of Utah at the annual Stadium of Fire 4th of July celebration in Provo.

See more of Kassidy's wedding photos after the jump.