Abigail Breslin is all grown up! The actress, who won our hearts as Olive in 'Little Miss Sunshine,' is dating All Time Low vocalist Jack Barakat.

There is a bit of an age difference, as Breslin is 17 and Barakat is 25.

The new duo was spotted at the Los Angeles premiere party for 'Ender's Game,' the sci fi flick in which Breslin stars. They've been keeping things on the DL, according to Us Weekly sources.

Barakat, who once briefly dated Holly Madison in her post-'The Girls Next Door' phase, after she broke up with Hef aka Puffin, met Breslin at one of his band's gigs back in April.

Barakat was also seen visiting the actress on the set of the film 'Maggie,' in which she stars as the titular character.

They appear to be a cute couple -- aw, the actress and the rocker -- and if she's happy, we're happy!

Can we just stop for a sec to talk about how gorgeous Breslin looks? Her makeup is so pretty and age-appropriate, and her eyes are mesmerizing. She's grown up to be quite the looker. Jack Barakat, who himself is well-coiffed, is a lucky dude.