"Walking holiday" Deena Nicole Cortese made her "Jersey Shore" debut last night -- but not everyone was a fan.
Cortese, one of Snooki's friends who joined her for a summer at Seaside Heights, got drunk, took off all her clothes in front of The Situation and started a blowout fight with Sammi Sweetheart and Ronnie ... all on the first day!
She definitely makes for some good TV, but we want to know what you think of "Jersey Shore's" latest addition ...
