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She made her debut as Sports Illustrated's latest star earlier this year to much buzz, while he's the man responsible for bringing Twitter to the world.

And it seems model Raven Lyn Cornell and social media tycoon Jack Dorsey have formed their own partnership - seen stepping out in St Barts on Sunday hand-in-hand... and into a jewellery store.

The couple - who went public in September - have an age gap of 18 years between them, with Raven only recently rising to notoriety in the modelling world.