The past half-year has proven a whirlwind for Rosengart, who will be feted at Variety’s Power of Law breakfast on April 20 at the Four Seasons Los Angeles at Beverly Hills. In sharp contrast to the groupies in pink Britney wigs and “Toxic” concert tees circling him on the courthouse steps, Rosengart evokes a character from a Salinger novella. At 59 years old, there’s a lot of it, swept back like a small crested wave - it’s New England prep school hair. “It’s been a lot,” says Rosengart, running a hand through his thick brown hair. Rosengart’s phone has not stopped ringing. He’s a cool lawyer,” one Spears follower posts. Rosengart has “turned life around,” writes Spears, peppering the post with a string of red rose emojis. The day we meet, Spears has posted a note of gratitude to Rosengart on her Instagram page under a photo of them in “accidentally” matching outfits - Rosengart in a pink, gingham-plaid button-down Spears in a blush pink dress. Those decades of diligence, perseverance and dedication are what primed the legal counsel for his latest professional chapter, the one in which he rocketed to fame in November 2021 for emancipating pop star Britney Spears from her 13-year, court-mandated conservatorship.
