Grace Kelly, who has made a splash as a jazz saxophonist in a relatively short time (she is just 20 years old), will be performing with her quintet at Weir Farm's Jazz in the Garden, 3 to 5 p..m., Sunday, Sept, 9, 2012, at the Weir Farm National Historic Site, 735 Nod Hill Road, Wilton, Conn. For information on ticket prices, visit www.jazzatweir.com.