Miss Maryland Joanna Guy. (B. Vartan Boyajian/AP)

• Hang onto your tiaras: It could be a big night for local women at the Miss America pageant Saturday in Las Vegas. Miss Maryland Joanna Guy won a key preliminary, taking top talen honors Wednesday night by singing the ubiquitous “I Dreamed a Dream” from “Les Mis.” The Cornell undergrad from Swanton, Md., was also one of seven contestants singled out for her do-gooder work. There’s also good buzz from pageant pundits about Miss Virginia Rosemary Willis, a William & Mary junior from Chesapeake. Meanwhile, Miss D.C. Allyn Rose — whose plans to get a double mastectomy to avoid an inherited breast cancer risk made national news — overcame a perilously slippery stage to nail her roller-skating dance routine. “At one point in rehearsal, I thought she was going to slide right under the piano,” Teri Galvez, the D.C. pageant director told us. “But she worked some things out.”

• News from the other pageant: Nana Meriwether, the Sidwell Friends grad who came in second at Miss USA in June, took over as the new Miss USA in a ceremony with pageant boss Donald Trump Wednesday. Original winner Olivia Culpo had to hand over the tiara for the final months of her reign after winning Miss Universe last month.

More Reliable Source: Carter Oosterhouse; Richard Nixon; 1600 Penn; Elizabeth Wurtzel; Zero Dark Thirty