A costume that Kinomoto Sakura wears in the 90s anime, specifically in episode 58 when she tries to change Yue (Cardcaptor Sakura) and Kerberos back to their false forms.
She wears a pair of blue pom poms with Yellow Ribbons in her hair, a Blue Vest over a Blue Dress, a Black Bodysuit beneath the dress, Blue Gloves, and blue Boots.