Do loving parents know if their opposite gender child isn't very attractive?

Even if the parents are loving, do they do if their child has grown up and never was attractive?

If a man isn't that great in looks and is of average height, would his mother be aware of this?

Similarly if a woman is just average, would her father know?

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While a child is a treasure to a loving parents and likely beautiful in their eyes but are they aware if they're child isn't that attractive overall?
Do loving parents know if their opposite gender child isn't very attractive?
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