Emily Ratajkowski, Martha Hunt, & Petra Nemcova Go Glam for Rihanna's Diamond Ball

Emily Ratajkowski debuts a bold new hairstyle as she attends Rihanna‘s 2017 Diamond Ball on Thursday (September 14) at Cipriani Wall Street in New York City.

The 26-year-old model and actress was joined on the red carpet by Martha Hunt, Petra Nemcova, La La Anthony, and Lil Kim.

PHOTOS: Check out the latest pics of Emily Ratajkowski

The day before, Emily was spotted looking stylish in a white tank top and beige trousers as she grabbed lunch at Gemma restaurant before the Marc Jacobs Fashion Show.

Also pictured inside: Emily Ratajkowski showing off her toned abs in an orange plaid outfit while out with friends on Tuesday afternoon (September 12) in NYC.

FYI: Emily is wearing vintage Chanel dress and David Webb jewelry. Martha is wearing a Protagonist dress. Petra is wearing a Cristina Ottaviano gown. La La is wearing Yousef Aljasmi.

20+ pictures inside of the ladies attending the Diamond Ball…