What does a girl wear to a launch party for Xbox One? Nothing floor length (too smart), nothing sparkly (it's not a premiere) and nothing revealing (it's a family-friendly occasion).
Her tartan shirt dress looked casual but chic thanks to a few key extras - a pair of black stilettos, gold nails and a floral tote (what was she carrying in there?)
And her new choppy hairstyle? Very cute. When Christina lets her hair down, she does it in style. Joan Harris would approve.
Love the Mad Men star's look? See more below: