Coronation Street star Sam Aston’s pregnant wife Briony has stunned fans with a naked photo of herself on her Instagram page.The soap star’s yoga teacher wife Briony covered her breasts with her arms as she stood side on in front of a mirror to show off her blossoming baby bump in the gorgeous picture. Briony’s blonde curly hair is tumbling over her shoulders and down her back as she looks at her phone while snapping the black-and-white photo.