Engaged Justin Timberlake celebrated a final night out as a single man during a raging bachelor party in Las Vegas on Thursday (20Sep12).
The N'Sync star, who is set to wed fiancee Jessica Biel in the coming weeks, toasted his upcoming nuptials with about 20 pals at the Wynn Las Vegas and "took over the dance floor" at Tryst nightclub.
Wearing a bow tie and a fedora, the pop star and his friends sipped on tequila while listening to tunes by DJ Spider.
A representative for the venue tells UsMagazine.com, "The group was very polite."
Biel is not believed to have held her own bachelorette bash yet.