Obviously I had tried previously myself to put the Ana morphs into the onesie using Wardrobe Wizard.

I get great results with WW most of the time, but with the Ana morphs going into the onesie, I just wasn't really feeling satisfied with the result... I guess because I had spent time with the mesh in the modeller already, I was ultra aware of where the automated fit wasn't coming out as gracefully as if I manually fitted it...

...so I'd decided to go back and try manually fitting it to Ana, in Hexagon.

However, I'm now going to give the Fitting Room a try, once I get my hands on it... :)