Last updated at 17:31

Jessica Ennis-Hill and Richard Whitehead in Mascot Challenge

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This summer will see the Athletics World Championships take place in London.

You can expect to see loads of Olympic and Paralympic heroes in action - but what will the mascot look like?

Well, Blue Peter is launching a new competition for you to design the mascots for the London 2017 IAAF World Championships.

The judges are some familiar sporting faces - Dame Jessica Ennis-Hill and Paralympian Richard Whitehead.

Jenny caught up with them to put their previous mascot knowledge to the test.

What will they score out of five? Watch and see…