Little Mix star Jade Thirlwall has stunned fans in a sequin blue bikini as she hung out by the pool with former The X Factor stars Marcus Collins and Ashford Campbell.The Black Magic singer, 27, posed alongside 31 year old Marcus and Ashford, 27, who were also matching in blue swimwear, on a set of stone stairs of the Rockwater Residences hotel in Ko Samui for the snaps, which she shared with her 6.2million Instagram followers.