she's been called nuclear wintour by those who fear her. others fawn over wintour.tour is someone who has been at the helm of "vogue" for 34 years. in her new book, "anna: the biography," amy odell offers a glimpse behind anna wintour's glasses. >> the sunglasses are actually prescription. >> did she approve of this book? >> i thought i was going to have to give up writing this book. anna's office got wind of the fact that i was working on this and she offered a list. >> reporter: and soon more than 250 of wintour's colleagues, acquaintances and friends began talking. what fascinates you about her? >> many people myself included know anna very well from meryl streep's depiction of her in "the devil wears prada." the director of the movie told me that when anna wintour gets to work everyone is in a titter. she is a titan in the business world. she advises people in the entertainment world, bradley cooper, when he had a script for "a star is born." ♪ in the shallow ♪ >> but had not yet cast lady gaga. he sent it to anna wintour seeking her feedback. serena williams to