People News 12/14/2014 Taylor Swift rang in her 25th birthday at NYC's Jingle Ball concert on Saturday where she performed along the likes of Ariana Grande, Pharrell Williams and Sam Smith. Read More RELATED NEWS Jimmy Fallon's 'The Tonight Show' dropping to only four nights a weekAshley Tisdale announces birth of her second childSelena Gomez is a billionaire TAGS: Sam Smith Selena Gomez Gwen Stefani Ariana Grande Taylor Swift Beyonce Karlie Kloss Justin Timberlake Nick Jonas Calvin Harris Iggy Azalea Jay Z Pharrell Williams Meghan Trainor Shawn Mendes
