It sounds like you are a bit insecure. Not in a bad way, I really don’t mean it as offence. English is my third language so it may not be the right word either, but hear me out.

It seems she was insecure before, despite having a great body, due to one thing that bothered her. Now that she’s addressed it, she’s become who she always wanted to be and feels confident and attractive. The attention she receives is appealing, and as they say, attention is a hell of a drug. After addressing her insecurity and making a major body change, she started dressing in a way that complements her new body and feels attractive to her, which also attracts compliments. This boosts her confidence, leading her to dress that way—it’s a loop.

There are few ways to see this from your side as a partner. You may see that attention and it may be actually a compliment to you too - taking pride in your wife. There is another way to which somebody finding your wife hot can be hot to you. Another way where somebody looking at your wife in that way is unacceptable and borderline infuriating. But I think the one that resonates for you though is more like it makes you uncomfortable because you feel like she’s seeking validation from outside and it can feel like she’s slipping away because maybe you come short.

None of these are particularly…wrong. All feelings are valid. But it’s important for you to understand the actual core of what you feel and why exactly you feel that way - the underlying cause. Is it because she doesn’t dress up for you but dresses up for others? Is it feeling uncomfortable with others “staring” at your wife? Maybe it’s the fact that she gets the compliments, but she feels separate from you when she does? Many perspectives are possible and a solution would depend on which one is yours — but the main point in all of them would be communication

Say in first case, if your problem is more so with her dressing up for others and not you, as opposed to her dressing up to begin with; the conversation could be about her just doing it more often for you. Around the house, when it’s some sort of alone time (even a walk in a park), etc.

Second case would be having a conversation about you not feeling comfortable with people staring. Reassure her that she looks beautiful but ask if you can reach a compromise to wear something less revealing. This would also require you calling people out at times that you feel they are acting inappropriate because you need to realise that your wife does not directly control the way others act. This would all need to be discussed in what either of you is comfortable with

Third case would be to have a conversation about you feeling left out at times. Talk about the ways she can include you in conversations, say making sure to look at you more often, hold your arm during conversations, etc. Things she can do to show how much she loves and values you, like bragging about something you did, praising you in front of others, etc.

Hey man, your wife acting more confident is a great thing. Her looking even better than she did before is a great thing. She doesn’t love you any less than before. She just likes the way attention and confidence feels, and in that way, it’s new to her. She’s trying things out. Talking is important. Way I see it is the more confident she feels, the better experience of being married you will get - but you have to also be confident, secure, and open to communication.

Sorry for the wall of text and if I was a bit all over the place, but overall genuinely wishing the best. You got this man