From pinterest.com/dianariveraguil/royals/; fixed the left, upper, and right edges with Photoshop and enlarged by half.
Maria's dress is colorful with paned sleeves revealing her white chemise - set off from her shoulders with an arm band. Paned sleeves divided into balloon-like segments by arm bands were fashionable around 1630. The lower sleeves have wide bands associated with sleeves that are filld towards the bottoms as seen in some English portraits.
Keywords: Maria de Portugal, Infanta Maria de Portugal, Duquesa de Viiseu, Infanta de Portugal, Aviz family, Princess, Portuguese, straight coiffure, jeweled feathered headdress, hair jewelry, shallow necklace, fitted bodice, jeweled crescent neckline, modesty piece, brooch, puffed cloth ornaments, arm bands, aglets, paned upper sleeves, flared lower arm bands, long paned lower sleeves, clasps, ruffled cuffs, bracelets, rings