Justin Bieber and Selena Gomez Crash a Wedding!

Credit: Kevin Mazur/WireImage.com

Justin Bieber and Selena Gomez are used to scoring invites to the hottest parties in Hollywood -- and when they don't, they crash!

The teen couple were strolling on the beach when they overheard Bieber's "One Less Lonely Girl" being played at a wedding reception in Malibu. According to TMZ, Bieber, 17, and Gomez, 18, decided to crash the bash to meet the bride and groom.

"We heard a party so we decided to just come," Bieber said after taking the mic. "So let's party!"

Bieber and Gomez then posed for photos with newlyweds Rob and Jeanine McCool, as well as several guests, before leaving the reception 10 minutes later.