They have the dream job - sitting on their comfy sofas, watching TV. And while the nature of Gogglebox means it's stars don't work together, they do have a unique bond.This was on show on Thursday as the show's stars including Sophie Sandiford, pals Jenny and Lee and sisters Izzi and Ellie Warner all united to help Shirley Griffiths enjoy her lockdown birthday.The telly stars all flocked to Welsh star Shirley's Instagram account to wish her the best of birthdays, in friendly posts.