Jennifer AnistonBeing an A-lister has its downfalls.

Such as having to trot the same celeb circuit as the rest of the stars.

Especially when one of them is your ex-hubby, eh, Jennifer Aniston?

She's been doing her starry thing at the Toronto Film Festival.

And guess who else is in town? None other than Brad Pitt - but is this town big enough for the two of them?

Well as of yet they've not bumped in to each other but they sure as hell are uncomfoJen and Brad Pitt in 2004rtably close to doing so.

There's even speculative chatter that Jen changed her hotel booking after learning that Brad was staying in a hotel across the street.

Brad drew a huge crowd when he went out for dinner, while Jen has been keeping it on the down low, slipping out of an underground hotel entrance and eating quietly down the street from where Brad was dining.

One thing Jen can be pleased about is that she's in tip-top form if she does happen to meet him.

And she seems to be having a jolly nice time at the mo. She told Us magazine about her recent stint on US show 30 Rock: "It was awesome, really, really fun."

Good for you Jen, keep up that PMA.