The Met's 125th opening-night gala features soprano Renée Fleming in excerpts from three of her favorite operas, Verdi's "La Traviata," Massenet's "Manon" and Strauss' "Capriccio." Joining her are tenor Ramon Vargas, baritones Thomas Hampson and Dwayne Croft, and bass Robert Lloyd; and she wears costumes designed by John Galliano, Christian Lacroix and Karl Lagerfeld.