What is it about becoming famous and no longer being able to feel the cold? Seriously, the number of famous ladies we see in strapless gowns outside on the red carpet at this time of year is shocking. Last night Gossip Girl's Blake Lively proved she is actually made from molten lava, by turning up to the Sherlock Holmes premiere in New York wearing this very-skimpy dress. We've been to New York at this time of year and it's absolutely freezing, so we just can't understand why Blake would brave the weather in a dress like this - even if she was heading to an indoor event. You can even see her pants through the back and everything! Madness! As well as Blake Lively and her blatantly summer dress, celebs who showed up to the premiere last night included Robert Downey Jr, Rachel McAdams, Jude Law, Guy Ritchie and his son Rocco, Pete Wentz, Ashley Greene, Jonny Lee Miller, Penn Badgley, Bruce Willis and Eva Mendes. There was no sign of Sienna Miller though. Funny, that... We've put all the pictures into a little gallery for you below. Aren't we kind?