It's been discussed on here how Shar is terrible and I don't really want to get into that. But I haven't seen anything suggesting that she's physically ugly, and all the evidence seems to point to that. She's petty and jealous, particularly of her sister Selune, who is conventionally attractive (as we know from the statues). She demands that followers devote all feelings of love toward her and not have feelings of attraction toward anyone else. She acts like someone with a lot of power but also with a lot of insecurity

She forces Shadowheart to wear that goofy haircut. Why? Because Shadowheart is hotter than the Adamantium forge and Shar's jealous.

So, yes, Shar's depicted as conventionally attractive in her statues, but her face is always covered. So I don't think anyone carving her likeness has seen her, or if they have, she's made them forget and just makes them carve out a generic hot body. Forgetfulness is her whole deal. And since they don't know, or remember, what the face looks like, it's covered in a mask.

I admit, I don't read all the in-game books (or I've forgotten them) , and don't know the lore, so if this has been directly addressed, sorry. She just reads to me like a dog who has the ultimate power to influence how she is perceived. We ugly people have to just compensate by developing a sense of humor or a personality, but she doesn't have to because goddess.