She says the reason her face was a little swollen is allergies.
Sandra told InStyle: "This past Oscars I was sick and had allergies, but I was like, 'I'm just going to go. It's part of my job, and I'm happy to be there.' Then the next day they were saying, 'Oh, she has cheek fillers and implants.' When I saw the photos and how swollen I was, I got it. But I was like, 'Well, if I got injections, I only got them on the top, which was not very good.'"
Sandra is 54