Thespians, models and all-round Hollywood heavyweights gathered to honour musical theatre's finest, with frivolous frocks and shiny jewels on display in typical red carpet fashion. Break a fashionable leg; here are our top six looks from the Tony Awards' Red Carpet... Lupita Nyong'o   Actress Lupita Nyong'o attends the 70th Annual Tony Awards Actress Lupita Nyong'o was a standout, dazzling…