Synonyms for Prettifying:

adj.

decorative (adjective)
Adorning, Embellishing.

v.

beautifying (verb)
dignifying, Beautifying, Gracing, Enriching, Embellishing, Decorating, Bedecking, Adorning, trimming.
ornamenting (verb)
Dandifying, Ornamenting, gilding, Festooning, Garnishing, Emblazoning, bedizening, crowning.