Keira and Kylie do the maxi dress

As the warm weather starts to seriously sizzle, celebrities all over the globe are opting to cool down with the ultimate fashion item - the maxi dress.

Everyone from Kylie Minogue and Nicole Richie to Jessica Alba and Keira Knightley have been pictured wearing the must-have dress du jour.

It is light, airy and comfy - perfect for strolling down the high street on a hot and sticky summer's day.

Kylie was spotted walking in London wearing a ditsy-print violet number with a halter neck, which she paired with a brown slouchy leather bag and a tribal necklace.

Meanwhile, Keira went for a more glamorous look, choosing to wear her maxi to a movie premiere, which she teamed with killer heels, a makeup palette to die for and a long chain necklace.

The Pirates of the Caribbean star is also a fan of this season's favourite boyfriend blazer and she has been pictured out and about wearing the must-have straw trilby.

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