Jennifer Aniston shocked after bumping into ex Vince Vaughn

It has been claimed that ‘The Break-Up' co-stars were quite serious about each other, but the end of their relationship wasn't the most amicable.

Jennifer Aniston. Pic/Santa Banta

A source told Heat magazine that the Hollywood actress, who is set to marry Justin Theroux, didn't know Vaughn would be there, the Herald Sun reported.

The insider asserted that Aniston was shocked, but she managed to cover it up with a smile and a quick hello.