I do not think that Louise Marie was considered a beauty in her day. Leopold himself not be found her very nice. The meeting before their marriage, he was quite disappointed with her mine, wearing her hair in the fashion of the time not putting her face value was spoiled by a nose too long, the nose famous Bourbon Sicilies inherited her mother and also transmitted to her son Leopold II.
However, a malicious temperament, spontaneous and outgoing in private, she had a certain charm and each of her actions, according to the witnesses, were most gracious.
Louise Marie seems to have have this innate grace that we say more beautiful than beauty itself...