But on Tuesday the red-headed beauty - whose sister is The Girl With The Dragon Tattoo star Rooney Mara - looked all dressed up in an eye-catching yellow dress as she took her dog for a walk in Los Angeles.
House - Cards - Actress - Husband - Jamie
The House Of Cards actress was joined by her husband Jamie Bell.
The 35-year-old looked summertime fresh in a sleeveless, floral print dress.
Kate - Look - Pair - Converse - Sneakers
Kate kept her look casual with a pair of Converse sneakers and accessorized with shades, a necklace and her wedding ring.
Jamie, 32, was styled in an athletic look. The UK-born star wore a striped, black T-shirt, sweatpants and sneakers.