Gavin and Stacey fans are convinced they’ve worked out Nessa’s ‘real age’ amid the ongoing mystery surrounding the fictional character.This comes after the incredibly well-received Christmas special of the beloved sitcom made viewers do their calculations in an attempt to solve the ongoing mystery. Nessa, played by Ruth Jones, is an integral part of the series and plays Stacey’s best friend in the show, but as far as her age goes we know very little about how old Nessa really is.