>>37855814She literally wears her outfits and they also parodied one of her movies in the XY anime.
My Sweet, Sweet Lady (Japanese: マイ・スイーツ・レディ My Sweets Lady) is a movie featuring Diantha. It was advertised on a large billboard in The Bonds of Evolution!. The plot and genre of the movie is unknown. It is likely a reference to My Fair Lady.