The model reportedly has dumped boyfriend Kevin Connolly after she found out that he has cheated on her with Brittany Field, the 18-year-old daughter of music mogul Ted Field.

Ouch, that must be hurt as Nicky and Kevin have been together for three years long.

On that matter a source reveals, "Brittany was so careless! She was bragging to everyone that she hooked up with Kevin last month while Nicky was in New York for fashion week. The two met at an after-hours party in LA, and well...you know the rest."