The Arlington Chamber of Commerce is hosting a “chariTea” benefit event next Sunday to raise money for the Arlington Youth Counseling Center. The tea party will be held in the historic Whittemore Robbins House from 2 to 4 p.m., and will feature a hat contest, music, and raffles. All proceeds go to support the mental health center, which has assisted local children, adolescents, and their families for the past 43 years. Tickets are $45 and seats are limited. For more information, call 781-643-4600 or visit the chamber’s website, www.arlcc.org .