Taylor Swift appears to have takena swipe at Katy Perry after a shark appeared behind herduring one of her '1989 'showsin Massachusetts this weekend.

K-Pez famously performed with two sharks at last year's Super Bowl half time show, with the left shark becomingan internet sensation after it was spotted messing up the dance routine.

During T-Swizzle's performance of 'Bad Blood' -asong reportedly about Perry -someone dressed up as a shark appearedbehind the pop-star and when Swift noticed, she then startedgiggling to herself.

Fans at the gig were quick to share the moment online and, of course, bring the Taylor-Katy feud back to the forefront.

It seems that after last week's VMA Twitter drama,it's all kicking off... again! Over to you, Katy...