The newly blonde Katy Perry made an appearance at the NYC premiere of The Smurfs movie over the weekend and what went down served as yet another testament to the power of her rack. When you got Smurfs trying to grab your goods, you know you’ve got something special. Either that or Smurfette, who Perry voices in the film, is a narcissist and was attempting to grab herself on Katy’s dress. Sofia Vergara was also in attendance, prompting many to suggest a “boob off” with Mrs. Russell Brand. Check out the pics and let us know who’s got better chesticles – Katy or Sofia in our poll below.