It’s like that friend you haven’t seen in a while, but fall right back in step with the moment you reunite. Such was the lovefest that ensued when Dress reopened in Beacon Hill a year after closing on Newbury Street. Although the boutique’s name pays homage to the little black number of note, you can also play dress-up in tattered skinny jeans, bohemian tops and tuxedo shirt dresses. Envelope clutches, laser-cut oxfords and glitzy jewelry make for fine finishing touches. Welcome back, old friend.