Gina Stewart, best known as The World's Hottest Grandma, celebrated her 50th birthday in style this week. Milestone: Gina Stewart, best known as The World's Hottest Grandma, celebrated her 50th birthday this week in style 'I stayed in the $1,000-per-night villa with Casey and Summer with its own private rooftop overlooking the ocean,' she told Daily Mail Australia. Pictured with …
