Yeah, buddy! "Jersey Shore" star Jenni "JWoww" Farley has gotten engaged to her on-again-off-again boyfriend Zack Carpinello, she revealed on Instagram Tuesday. "On 2.27 I said yes on the top of the Empire State Building ," she captioned a pair of shots of her and Carpinello kissing and toasting with champagne while looking out of a window in the skyscraper.