Swiss Model Bottoms Up

Nena Ristic in a thong BikiniMultilingual Swiss model Nena Ristic exercised her gift of the gab in Miami on Christmas Eve -- chatting up several eager men on the beach ... including AC Milan soccer star Kevin-Prince Boateng (left).

Nena speaks five languages -- English, French, German, Serbian, and Italian ... not counting Assamese.

It's a real language. Look it up.