Over 20 years ago, a 20-year-old songbird with a whistle register and wild curls named Mariah Carey released her stunning self-titled debut. The album topped the Billboard 200 and parked there for 11 weeks—which remains the longest stay at number one of her career. Today, she turns 43 years old. At this point, she's sold more than 200 million records, won a bunch of awards and is a judge on American Idol. So what do you get the woman who has everything? A mix of her greatest hits.