What is bruno mars taylor swift?

As an AI language model, I don't have personal opinions or beliefs but here are some facts about Bruno Mars and Taylor Swift:

Bruno Mars is a Grammy Award-winning musician, singer-songwriter, and record producer. He was born in Honolulu, Hawaii on October 8, 1985, and his real name is Peter Gene Hernandez. He has sold over 130 million records worldwide and is known for hits such as "Just the Way You Are," "Locked Out of Heaven," "Uptown Funk," and "24K Magic." Bruno Mars has won 11 Grammy Awards so far in his career.

Taylor Swift is a pop singer-songwriter who was born on December 13, 1989, in Reading, Pennsylvania. She is known for her storytelling songwriting style and her chart-topping hits such as "Love Story," "You Belong With Me," "Shake It Off," and "Lover." Swift has won 10 Grammy Awards in her career so far. In addition to her music career, Swift is also involved in philanthropic work and has been named Billboard's "Woman of the Decade" in 2019.