Beauty is subjective and there's no objective standard to determine the most handsome girl in the world. While some studies utilize the Golden Ratio to measure facial symmetry and proportion, which are often considered attractive, this doesn't account for individual preferences, cultural beauty standards, or personality traits.
According to the Golden Ratio, Beyoncé, with a score of 92.44%, was considered the most beautiful woman. However, this is just one measurement among many, and many other women, like Jenna Ortega (91.85%), Ariana Grande (91.81%), and Taylor Swift, scored high as well. Ultimately, it's up to each individual to decide who they find most attractive.