What event held on April 3, 2011 did Snooki compete in?
Snooki:  She also appeared as the guest hostess for "WWE Raw" in 2011 and competed at WrestleMania XXVII that same year. WrestleMania XXVII: WrestleMania XXVII was the twenty-seventh annual WrestleMania professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE), held on April 3, 2011 at the Georgia Dome in Atlanta, Georgia.
WrestleMania XXVII