By Nicola Methven & Ruby Flanagan Margot Robbie was swathed in pink on the red carpet in a nod to her role in Barbie \- but reunions were the big talking point at the Screen Actors Guild Awards. Anne Hathaway and Emily Blunt, both 41, joined their co-star from The Devil Wears Prada, Meryl Streep, 74, as she presented the first award, handing her the envelope and her glasses so she could read the results. And former husband and wife Jeff Goldblum and Geena Davis, who divorced in 1991, also reunited to present a gong, joking that they would have liked to have won one themselves for their 1986 ho…