Create a heart-warming image: a collage featuring two female best friends, one of whom is a girl with white heritage while the other girl has black skin. They are personified in a Chibi style, portraying exaggerated cuteness, large expressive eyes and small bodies. Capture the essence of their strong friendship through their joyful smiles, interlocked arms and matching outfits. The background is filled with pastel gradients symbolizing their shared dreams.