Well,as long as she is reusing the dresses that are pretty, I do not object;-) CP Letizia has a few great dresses she has worn many times and I still love to see them every time she decides to wear them for an official event! There are a few outfits and dresses I am not fond of - I would not miss them if they "disappeared" in the back of her wardrobe, but the beige dress is quite nice IMO
The bad thing for the royal ladies nowadays is that no matter what they wear, someone will critisize them...I often read that CP Mary or Q. Rania are bashed for wearing too expensive brands and spending too much money on their outfits, while at the same time people expect other royals to buy more clothes and wear more expensive stuff! (e.g. Duchess of Cambridge is often questioned for wearing bijoux and low-priced clothes) I would also like to add that I wish to see them wearing more fair trade and "green" fashion (meaning garments that are produced sustainable and without unhealthy chemicals etc.)
This said,it must be quite difficult fot the royal ladies to wear the right type of clothes and live up to everybody´s expectations....