Boston milliner Marie Galvin, whose hats have been worn by Alicia Keys, Cher, and Claire Daines, reported on Facebook that Bruno Mars — who has a gig at the TD Garden on Wednesday night — stopped in on Tuesday to look at her collection. “Damn!!! Bruno Mars just popped in for a hat with his crew! Had to send him to my vintage neighbor Bobbi of Boston . . . boo hoo!” We assume Galvin means Bobby From Boston in the South End, a place that would have looks for men. Galvin’s Galvin-ized Headwear line is mostly for women.