Whenever I see Kiernan Shipka in something other than a mod dress and blonde bob, I'm like, "Oh wow, Sally Draper changed her hair ... she mostly keeps her roots dark. And yet ...

The Mad Men alum bared her long, toned legs in a strapless black mini dress with bow accents ... But I'm happy to be 25.' Kiernan previously explained that she's been described as 'wise beyond ...

Among the assembled luminaries, Kiernan, 25, was a standout in a plunging ... She sharpened her unmistakable features with makeup and wore her dark hair down in luxurious waves for her latest ...

For the occasion, she pulled her brunette tresses into a quirky black headpiece and bleached ... celebrity pals including Twisters actress Kiernan Shipka. The pair posed for snaps together ...