Today Your source for all things celebrity and entertainment. Selena Gomez keeps on slaying with her sexy looks! The 23-year-old pop star killed it onstage at the iHeartRadio Z100 Jingle Ball at Madison Square Garden in New York City on Friday, both with her killer looks and performances of songs such as "Same Old Love," "Good for You" and "Love You Like a Love Song." She also reunited with collaborator and DJ Zedd to sing their track "I Want You To Know."