She may be the spitting image of his missus – but Selena Gomez WASN’T the lucky lady cuddling up to Justin Bieber this weekend.

Instead the teen idol, whose new album ‘Believe’ is set to drop next month, reportedly swapped smooching his ‘Disney’ missus for some full-on PDA with a mystery brunette!

But, before all you Jelena fans fear it’s the end for Hollywood’s sweetest couple – JB’s steamy make-out sesh with the Selena look-alike was all in the name of a hard day's graft!

According to The Sun, the loved-up looking pair were pictured “passionately kissing” as they acted out scenes for JB’s new music video ‘Boyfriend’ in LA.

And just in case Selena’s Doppelganger had any ideas about taking their lip-locking off-screen – the real thing, Miss Gomez herself, made a sneaky appearance on set to keep an eye on her man!

Not that we blame her!

Check out more from the tween hottie in action in the video clip below…

Justin Bieber performs Live at the Odyssey Arena ...

Copyright : MTV Australia