The Princess is standing proudly atop a rolling hill covered in freshly-fallen snow. She is clad in a gorgeously elegant white dress that had been delicately given lines of shimmering silver. A dark blue cape of smooth velvet brushed the ground around her, the fabric shining when recently warmed by the sun. Atop her head the Princess wore a golden crown adorned with precious jewels, only further reinforcing her radiant beauty.
When adding color to this beautiful image, I suggest keeping her dress a pale and luminous white, her cape a dark and comforting blue, and her crown a bright and brilliant gold. The snow around her should be a pristine white while the sky can echo with deep blues and creams. With these colors, the Princess will radiate the peaceful wonderment of a winter day.