So that's where our Tina Brown is! Girl, where you been? Long time no see! You turn in that Princess Diana book yet? Damn. Anyway, Ms. Brown made an appearance last night at the 60th birthday of Blackstone Group chairman Stephen Schwarzman. A billionaire "several times over," he threw himself a big old grown-up bar mitzvah at the Seventh Regiment Armory. Also joining him at the candlelighting ceremony was CNBC anchoress Maria Bartiromo, who showed up with her (reportedly estranged) husband Jonathan Steinberg, instead of her alleged lover, disgraced Citigroup honcho Todd Thomson; the Trumps, squinting as per usual; Baba Wawa with consort Vernon Jordan; the Patakis; and so on and so forth. Stevie went all out on this one—no DJ; instead, the sweet musical stylings of Rod Stewart. Today you are a man—and a man bringing back the kind of big-spending class this town so desperately needs.