Best celebrity photobombs?

Ever get that feeling someone's lurking behind you? Check out which celebrities have fallen victim to a hilarious photobomb ... As Demi Lovato and Nick Jonas smiled nicely for the camera at the Teen Choice Awards, there was an unsuspecting visitor in their snapshot. Joe Jonas, 23, who sat one row behind the two and previously dated the "Heart Attack" singer, positioned his face directly between Lovato, 20, and his younger brother to make a surprisingly funny face.

Is there room for a plus one in this selfie?! Rihanna gets photobombed in front of the Eiffel Tower in Paris, France on June 7, 2013.

Looks like Queen Elizabeth suffers from a pretty severe case of B----y Resting Face.

Three's company at the 2013 Grammy Awards. Kelly Clarkson strikes a pose behind Ellen DeGeneres and longtime love Portia de Rossi inside the Staples Center on Feb. 10, 2013.

This is hardly acceptable Academy behavior! "Modern Family" star Jesse Tyler Ferguson hops his way into the middle of Miranda Kerr and Orlando Bloom's photo at the 2013 Vanity Fair Oscar After Party on Feb. 24.

Ever get that feeling someone's watching you, Alex Morgan? The Olympic soccer star gets photobombed by a lurking man in Zurich, Switzerland on Jan. 7, 2013.

Sorry, Andrew Garfield, you officially can do nothing without your girlfriend. And that includes taking a photo with fellow English actor Neil Stuke.

Someone wants to be the center of attention! Tom Cruise jumps to new heights (this time not on Oprah's couch) at Comic Con 2013 behind the cast of "Edge of Tomorrow".

That suit wasn't loud enough, so sideline reporter Craig Sager had to be sure he'd steal the show from Will and Jaden Smith by photobombing them on May 15, 2013.

All in the family! "Modern Family" stars Jesse Tyler Ferguson and Ty Burrell are joined in a hilarious snap by co-star Sofia Vergara backstage at the Screen Actors Guild Awards on Jan. 27, 2013.

President Obama and First Lady Michelle Obama hardly get any alone time these days. Not even for a kiss on Inauguration Day.

Oh Bill Clinton, you've always been a sneaky devil.

Oldschool photobomb! Armie Hammer opens wide for the perfect photobomb of "Social Network's" Aaron Sorkin and Jesse Eisenberg at the Golden Globes in 2011.

Weddings are a time to bask in love, happiness -- and photobombs! Kevin Federline bombs his bride Victoria Prince at The Hard Rock Hotel in Las Vegas on their wedding day.