Ibiza last hurrah outfit help

[Appleseason]

DH and I have booked a trip to Ibiza to celebrate where and when we first met in the 00s. We are going to a trance night in Amnesia, where we first met. The thing is, I am no longer 23. Lycra is now not my friend, and Punky Fish was open the last time I went clubbing.
So, what do I wear?
I am mid 40s, busty and slightly fat. I will be wearing trainers, but that is all I have decided on.
Can anyone share any wise advice as to what to wear? I don’t want to look as though I am trying to be 23 again, but I also don’t want to look as though I stumbled in by mistake.
DH has tailored knee length shorts and a linen shirt. He is also clueless and suggested I wear a crop top. I think not. I am getting a bit saggy, and a bit crinkly.

Are you going to the Godskitchen event at the end of sept? DP is going with a group of friends as part of his 50th bday year celebrations. We have gone to Ibiza every year for a long weekend for the past few years and like you, I spent a lot of time wandering what I should wear! I would say just wear whatever you feel comfortable in, I stressed too much thinking that everyone would be looking like models when they don’t! For our last visit in June I wore a black short playsuit and chunky sandals to one event, then the next night I wore a gold and white short playsuit with gold chunky sandals.
im also in my 40s with big bust and a bit chubby!