The actress takes part in competition

Helen Flanagan has been indulging in a bit of playground humour.

She’s shared an Instagram snap of her and TOWIE‘s Joey Essex dressed as school children for a funny segment on Celebrity Juice.

The pair, both known for being a bit ditzy, went head-to-head to find out who was smarter in a challenge overseen by Keith Lemon.

Both decided to dress the part in school uniforms, though Helen spiced her outfit up by undoing some buttons on her shirt to show her black bra.

Tune into Celeb Juice tonight #seriousjokes,’ Helen, 23, posts alongside the funny photo.

The ex-Coronation Street actress, who posed for a Page 3 shot last week in The Sun, also uploaded a snap of some saucy Jelly Boobs sweets that her stylist Jodie Stringfellow bought for her to celebrate her first topless shoot.

Thanks baby @jodiestrings xxx,’ the blonde star writes.

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Anna Francis