Kristen Stewart slips into bikini to film love scenes with Robert Pattinson during night shoot

 Nobody likes doing overtime.But when Robert Pattinson was told that he had to re-shoot scenes for the final Twilight movie at the weekend, he probably yelped with joy.The 24-year-old was flown to the Caribbean, for starters, and once there, his 'toil' consisted of filming love scenes with his real life girlfriend Kristen Stewart, 21.It was all meticulously covert in a bid to