Well if I had been thinking 100% Asian then Thai might have been my choice because as a rule compared to other Asian women they are "curvier" about a cup size bigger
I thought Filipina assuming a lot of Hispanic or US influence in the gene pool and there is a lot more of that at least potentially in the Philippines although Thailand has been an often visited RrR spot by US service members, mostly the 7th Fleet for like 60 years now.
So if she was born in Thailand in 74 and conceived in 73 who knows
Also we should consider the possibility that we are seeing the results of a really well done boob job 20 or so tears ago ,Tiffany Towers level of well doneness , one possibly done to fill up a set of D cups that got the life sucked out of them by a kid or 2 and after a couple of decades of gravity look like they do now