Shirley MacLaine, the legendary actress, is celebrating her 90th birthday with the announcement of a new book detailing her 'wonderful life.' Despite her age, MacLaine reveals the secret to her longevity, emphasizing it's not about great genes. Fans and critics alike commemorate her milestone with reflections on her illustrious career, including iconic films like 'Terms of Endearment' and 'The Apartment.' MacLaine's birthday festivities include a low-key lunch in Malibu, setting the stage for the release of her upcoming memoir, 'The Wall of Life.'