She was in a popular kids dance group in Thailand, so people are always finding new photos of her. The only reason she's one of the poster children for plastic surgery in KPop is because she can't manage her past like most other idols do. With most you will see a few baby photos, then it skips to trainee pics where they're already several procedures in.
She was darker skinned as a kid (due in part to being a kid running around in Thailand rather than an adult hiding from the sun in Korea) and had a larger nose. So we can confidently say she's had at least one nose job. Skin whitening is an unknown because she looks more tan without makeup. Every member of her group looks paler as an adult. Her lips I can't figure out because when she's pouting they look full, when she has a wide smile they look the same as in her child pics. But her jaw, chin and eyes haven't changed, and that already puts her in the lower tiers for surgery by default.
She literally may only have had a nose job, yet people who stan idols who may have had 8 or 9 surgeries to fulfill that shopping list of Korean Beauty Standards feel superior enough to mock her... It's not fair really.