Leggy lady! Kate Middleton dazzles in Self Portrait dress to film premiere

Kate Middleton can pretty much do no wrong in the style department, and this evening's appearance on the red carpet is no different. The Duchess of Cambridge dazzled in a long white dress by Self Portrait, showing off her perfect gams as she walked down the red carpet.

Attending the premiere of "A Street Cat Named Bob," Kate arrived to support one of her patronages, Action on Addiction. She met the stars of the film, including the adorable feline who inspired it all.

Kate wore her hair down, in a bouncy Chelsea blowout, and carried a deep red clutch to match the poppy on her dress. She appeared to be wearing her crimson Gianvito Rossi heels, as well.

See also: Renowned Irish designer slams Kate Middleton's Vogue cover

Earlier that day, Kate attended screenings at the Recovery Street Film Festival, featuring films made by former addicts and their loved ones about life in recovery from addiction.

Above, see photos from Kate's walk down the red carpet, as well as a few moments from the Recovery Street Film Festival. A full day of events (and movies!) and she still looked flawless!

Below, see the moment Kate met Bob, the star of the film.

Shop Kate's look and more of our favorite Self Portrait pieces: