Tightly constricted sister girlfriends (in bodice and facial muscles!) alight via town car to the distinguished-sounding Opera News Awards at the Plaza, which will honor well-padded sopranos and mezzo sopranos and baritones like Renée Fleming, Natalie Dessay and Marilyn Horne (whoever they are!). Presenters include luminaries from opera and other artistic disciplines: Plácido Domingo, who once did a brilliant duet with John Denver; stage doyenne Marian Seldes; and Garrison Keillor. Say: If we take up opera, can we quit yoga?
[Opera News Awards, the Plaza, 6 p.m., 212-769-7009]