Actress Tina O'Brien has left her adoring fans gobsmacked after sharing a stunning holiday photo on Instagram ... fathom how this woman is 41-years-old. What the hell." Someone else quipped ...

She also showed the striking resemblance between her and daughter Scarlett, as she shared a sweet photo of her and the 16-year-old at a restaurant, wearing coordinating all-black outfits.

Tina won the National TV Award for 'Most Popular Newcomer' in 2000. She left the show in 2007 when her character moved to Italy. In 2010 O'Brien started filming a new role for the BBC1 drama ...