Rizer's pale skin, covered in freckles, and her bright blue eyes caught the modeling world's attention.
She initially turned down modeling offers to continue her studies at the State University of New York at Geneseo and the Rochester Institute of Technology.
Her hair is naturally strawberry blonde, which she dyed red to attract the attention of Italian Vogue and photographer Steven Meisel.
She has walked the runway for Fendi, Calvin Klein, Donna Karan, Chanel, Marc Jacobs, Oscar De La Renta, Miu Miu, Michael Kors, Prada, Jean Paul Gaultier, Dolce & Gabbana, Max Mara, Jil Sander, Blumarine, Céline, Givenchy, Louis Vuitton, Gucci, Alexander McQueen, Ralph Lauren, Valentino, Missoni, Yves Saint Laurent, Versace, Balenciaga, Carolina Herrera, Alberta Ferretti, and Viktor & Rolf.
Rizer has appeared in fashion campaigns for Versace, Prada, Calvin Klein, Valentino SpA, Céline, Louis Vuitton, Balenciaga, Escada, Lanvin, Clinique, Tommy Hilfiger, Ann Taylor, Fendi, Max Mara, Gap, Dooney & Bourke, and Neiman Marcus.
In March 2014, Rizer returned to the runway, walking for Louis Vuitton at autumn/winter Paris Fashion Week, and in May at the house's 2015 cruise show in Monaco.
[5] In 2015, Rizer walked for Prabal Gurung at Spring 2016 New York Fashion Week and in August, was shot by Inez and Vinoodh for American Vogue.
[7] At age 20, Rizer and her mother hired a New York City financial manager to handle her money in exchange for five percent of her earnings.
Weeks later, her stepfather John Breen, who was in the insurance industry, told her that this was a waste of money and that he wanted to handle all of her finances.
Maureen Brennan forced her husband into alcohol rehab and while he was gone, she came across receipts, documents, and forged checks in his trashcan at his office.