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We love the Grecian goddess-inspired white J Mendel gown Taylor Swift wore to the 2013 Grammy Awards tonight, but the 23-year-old country cutie is getting super slender these days. Maybe it's just the arm pose? She's always been kinda lanky...

Not only did Taylor look incredible, but she put on quite a show when she performed “We Are Never Ever Getting Back Together," which is reportedly about ex-boyfriend Jake Gyllenhaal. And that's not all -- Taylor won the award for Best Song Written For Visual Media Award for "Safe & Sound” from The Hunger Games soundtrack.