Former TOWIE star Shelby Tribble wowed on Instagram as she posted a gorgeous bikini snap showing off her blossoming baby bump.The mum-to-be is currently on vacation with boyfrined Sam Mucklow, as the couple enjoy a baby moon abroad and soak up some summer sunshine. Shelby posted the stunning bikini snap to her Instagram page, as she accompanied the gorgeous picture with a caption that revealed to fans that she was starting to experience some uncomfortable pregnancy side effects.