Reuters 1 / 16

The perfect LBD! Duchess Kate looked beautiful in little black dress while attending the SportsAid charity dinner at Victoria Embankment Gardens in London on Nov. 28.

PHOTOS: Kate's stunning post-baby body

The 31-year-old Duchess of Cambridge showed off her toned legs in a lace Temperley dress. She accessorized the look with a bright red clutch and Jimmy Choo black pumps.

Kate visited with guests on the red carpet, and happily posed for photos. The duchess is a patron of SportsAid, which is an organization that provides athletes with financial support early in their careers.

PHOTOS: Prince George's baby album

Kate attended the event without Prince William, who most likely stayed home with their 4-month-old son Prince George.

A source told Us Weekly that the new parents are trying to raise their son without much help from a nanny. "Kate doesn't want George to be more used to the sight of the help than to his own parents," the insider told Us.

PHOTOS: Kate's body evolution


Celeb babies of 2013

How much did Prince George's stroller cost?

See the royal christening photos