They have been surrounded by pregnancy rumours for weeks but now it appears that they are having twins and already have names picked out!

That’s right, Jennifer Aniston and Justin Theroux are at the heart of even more baby speculation today as it emerges that they are to be blessed with two little ones.

They do look like they are hiding something! Could it be twins?

A source told OK! magazine: “At a party, Jen had a whole group of pals weighing in (with baby names) and when somebody jokingly asked if they were expecting twins Jen got really coy and said ‘Maybe!’”

The insider also revealed that the couple, who got engaged earlier this year, are picking unusual names for their children.

“Justin is a pretty quirky guy and the names they’ve picked out reflect that… The names certainly aren’t average! For boys names they’re going really off the wall! And for their daughter they’re also thinking pretty out of the box,” they explained.

The actress’ rep has denied that she and Justin are expecting but that hasn’t silenced the whispers. In fact, as the days go by, more and more ‘evidence’ emerges suggesting that they are getting ready to welcome a new addition.

If it is true and the pair do eventually announce it, it will definitely be the worst kept secret in the history of celebrity pregnancies!