Queen Elizabeth celebrated her granddaughter Princess Beatrice's birthday in an adorable Instagram post.The Instagram caption described Beatrice as "The Queen's 5th grandchild."Beatrice recently tied the knot with Edorado Mapelli Mozzi in a small and idyllic wedding ceremony in Windsor.Princess Beatrice celebrated her 32nd birthday on August 8, 2020, and the royal family shared their best wishes on Instagram.The queen was among the first to wish Beatrice a happy birthday.