On Saturday, Oct. 15, Betsey Johnson presented her Fall Winter 2011/2012 Ready-to-Wear collection at the Cyclorama at the Boston Center for the Arts. The models strutted down the runway in playful tartans, stripes, and animal prints to “Run the World (Girls)” and “Sweet Caroline” (with the crowd singing along to the latter). After the show, Betsey performed her famous cartwheels and splits across the runway and danced around with the models, who sported bright pink “We can do it!” tanks. The subject hits close to home for Betsey, who is a breast cancer survivor. Proceeds from the night went to the South End Community Health Center, of which her brother Bob (pictured) is president.