When it comes to fanart, Most artists draw the characters the way they are without any changes to the characters, Often times, They do enhance the characters by expanding their breast size by a large or larger degree and having wide hips and prominent butts, This is omnipresent in a lot of fanart in Anime/Manga, Cartoons, Comics, Books and Video games, etc. For instance, Princess Peach, Daisy and Rosalina are depicted being having large breasts or wide hips in a lot of fanart, Pink Gold Peach falls victim of this as well, As they usually depict her being busty or curvy in her motorcycle suit from Mario Kart 8.
Velma and Daphne from Scooby-Doo also fall victim to this as well, as Velma is depicted as a sexy nerd in fanart, as for Daphne, They usually make her sexier than she is, I know that is made for fanservice, or make the character sexier than they actually are, for the case in MLP fanart, A lot of the characters are depicted busty and curvy in fanart as well, It’s also the case of Rule 34 as well, I know it’s prevalent in fanart to sexualize the characters that way, This is really getting to the fact that it’s overused, So it’s best to draw characters the way they are rather than making character sexier than they are.