Christina, who graduated to become an astronaut in 2015, was one of eight candidates chosen from a pool of more than 6,000 — but even qualifying to train as an astronaut is no cakewalk. The application requirements include a bachelor's degree in a STEM field, the right kind of post-graduate experience, and demanding physical requirements. And why she jumped at the opportunity to be a featured dancer (and master splitter) in the music video for Cardi B and Megan Thee Stallion’s hit “WAP.” But at the same time, I was a teenager, and she was a full-grown adult. So in my head, I couldn't totally relate to her 'cause I didn't have that life experience yet. But I sawHairspray audiences got to see Danielle in a whole new light as the maternal, sweet-to-a-fault Olympia in the postapocalyptic thrillerBird BoxalongsideSandra Bullock