Take a Bite Out of Breast Cancer has local restos donating portions of proceeds to the cause.
Take a Bite Founder Lisa Shapiro, also of Dining in D.C., was on hand to greet eventgoers and support Rivera as a cause ambassador.
"My sister, Christa Floresca, and her nonprofit, Pink Jams!, are putting on a huge runway event later in October and this month of Take a Bite restaurant events was organized as a way to help her advocate and bring more awareness to her event and the larger cause," Shapiro said.
"Anthony's involvement also resulted from breast cancer touching his family... sadly, multiple members," she said. His grandmother was a 20-year survivor, and his aunts Annie and Liz have undergone surgery, chemotherapy and radiation treatments. They're now facing reconstructive procedures.
"Like my aunts, countless individuals around the country must interupt their lives in order to save it. I believe participating in this charity can help others beat this cancer," Rivera wrote on his blog, Done Like Dundee... Gone Like Ghandi. "And if Take a Bite accomplishes it's mission with only one person, without a question it would be worth it."
At the Tonic event, Shapiro said, "It's hard when it touches those you love. But it's fun to have [Rivera's] mother here tonight having a bite with us!"
For the entire month of October, two dozen participating restaurants -- including Tonic, Hudson, Bangkok Joe's and Proof -- will donate a portion of their food and beverage sales on specific days to support the Pink Jams! cause. See a full list of venues and dates here.