by Breaking Celebrity News Staff

It wasn't a good day for Snooki. She stumbled coming out of a bar with her best Jersey Shore pal, J-WOWW, cutting her knee in the process.

The girls crossed a piazza and then sat on the steps of Pizzeria O'Vesuvio -- the Jersey Shore cast is working there during their weeks in Florence, Italy -- and J-WOWW tended to her friend's wounded knee.

For once, the Snookster didn't want to be seen.  She kept her hat pulled down over her face the entire time.