Xylosyltransferase involved in anthocyanin biosynthesis by catalyzing the xylosylation of cyanidin 3-O-galactoside to form cyanidin 3-O-[2-O-(-xylosyl)-galactoside] (PubMed:21175894). Required for the accumulation of anthocyanin in red-fleshed kiwifruit varieties (PubMed:21175894). cyanidin 3-O-beta-D-galactoside + UDP-alpha-D-xylose = cyanidin 3-O-[beta-D-xylosyl-(1->2)-beta-D-galactoside] + H(+) + UDP Pigment biosynthesis; anthocyanin biosynthesis. Expressed in ovaries. Expressed in the inner and outer pericarps of developing fruit at 20 days after flowering (DAF) (PubMed:21175894). Low expression detected at 49 DAF and gradually decreases up to 126 DAF (PubMed:21175894). Belongs to the UDP-glycosyltransferase family.