kellytwinstrav.jpg John Travolta and Kelly Preston have already confirmed that they're expecting, and it looks like it's going to be twins!

“They were ecstatic when they thought they were having just one baby,” source tells Star mag. “Now that there will be two, they can barely contain their happiness!”

The source says Kelly began in vitro fertilization treatments, which increased the chance of conceiving twins, and the actress is already busy preparing for their arrival. Though a rep for the Travoltas has yet to confirm the news, the source added, "She’s having the time of her life looking at all the cute little outfits and toys online!"

UPDATE:
Uh oh! Looks like the mag got their story wrong! A rep for the Travolta family tells X17online that the happy couple are not expecting twins and the story is "totally false."