Dame Helen Mirren doesn’t think she is “that beautiful”. The 78-year-old actress believes she “looks okay” and has learned to embrace her individuality, even though she spent her younger years “desperately” wishing she looked like 1960s model Twiggy, who was named so because of her thin frame. She told People: “I look okay, but I’m not that beautiful. But we are all individuals and we all have our own individuality. And I think ultimately it’s just embracing that and allowing yourself to be what you are. I desperately wanted to be Twiggy and I absolutely was not Twiggy in any sense. “The real …