I agree with the cartoonish lip fillers she got later, but in my opinion she first got lip fillers in the early 2000s (edit - and possible even before).
From 1998:
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From 2001:
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From 2002 (the white area on her top lip, our left side, looks like an injection site. Her pupil size is also interesting...):
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Anyone is absolutely free to disagree with me of course, but I think this because I believe I have a good eye for facial features and adjustments that actors/models have had; I've also had fillers myself (but not lip fillers); and I have a good friend who is an aesthetic doctor (he does my botox and fillers sometimes), and we talk about things like this. I also believe B has had botox and fillers too. It's completely normalised now in Hollywood and in some professions/areas of London, and in fact if actresses didn't have it done they would probably be at a disadvantage now, sadly.
Looking back at photos it's clear to see she also had her teeth sorted out when she was with Olivier, and then I think she got veneers later after moving to LA. Remember, an accusation from a narc is an admission, so "Bianca's veneers/nose" needs to be replaced with "Alice's veneers/nose".
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For the record I think she looks absolutely stunning here, like an early 90s supermodel when that glamazon/strong-featured look was in, and when beauty standards were different. There was more natural beauty as mass plastic surgery and widespread fillers/botox didn't exist (although she had had a nose job by here for sure):
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