Taylor Swift on The Tonight Show Pictures

Taylor Swift brought a pop of color in a floral Tracy Reese dress to The Tonight Show yesterday. She chatted with Jay Leno about being "stupid" when it comes to love and also touched on her upcoming animated feature, Dr. Seuss's The Lorax, which hits theaters on March 2. Taylor joined costar Zac Efron at the premiere of the movie on Sunday in LA, where Zac praised her for being "absolutely wonderful." The duo got back together for press in an episode of The Ellen DeGeneres Show that airs today. Zac and Taylor cleared up rumors that they are dating and pulled out their guitars for a funny duet. Zac didn't address his reported relationship with Lily Collins, though he did say that he spent Valentine's Day making dinner "with a friend." He also shared a picture of himself getting a new tattoo, his third, while wearing Ellen underwear.