How do I say to a friend she's not good looking?

She said to me that she she's an 8 and sometimes she feels like a 7, and she asked me what I think, if I think she's an 8 or a 7. But I don't think she's even a 7

My first impression of her when I met her was that she's ugly. She looks better now tho! Still not good looking

I had guys randomly tell me she's ugly. Even a coworker of my boyfriend first saw her and told him "what an ugly lady"

Sometimes she asks me stuff like this and I don't want to lie, but also I don't want to hurt her feelings. I change subject or tell her she looks good!

Please don't insult me or call me a bitch for saying she's ugly, I don't think there's anything wrong with her, I'm sure a lot of people find her attractive! That's for sure

Or should I keep lying to her? Or what can I say to just... not answering directly?

Updates
9 mo
She insisted twice that I didn't answer her question, so the second time she insisted, I told her I cannot rate her, and plus I know her too much, I can't be objective, told her to ask a guy, like one guy friend we have in common (whom I know finds her attractive) she said jokingly that he was going to rate her a 5 and I was like nope, impossible (because I know he finds her attractive), and she said that he will possibly actually rate her a 7 and he rates her less than an 8 she's going to cry
How do I say to a friend she's not good looking?
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