Usher and Stevie Wonder perform at couple's wedding rehearsal dinner

Usher and Stevie Wonder helped to make a couple's wedding weekend extra special by performing at its rehearsal dinner on Friday (01Aug14).

Kaily Smith, the daughter of natural gas executive Mike Smith, and her fiance Adam Westbrook hosted a carnival-themed bash ahead of their nuptials at the St. Regis Monarch Beach Resort in Dana Point, California.

During the celebration, guests, who had to wear headphones to hear the performances due to a noise curfew, were treated to tunes from the hitmakers and Smith and Westbrook were invited on stage while Usher and Wonder serenaded the couple, according to TMZ.com.