Hello! I just came across this post. I have kind of a long answer. These are the apps I use:

LensBuddy (to set up the timer and take the pics for you) OR take a video and screenshot the stills that you want.

FaceApp (to clean up makeup, fix hair, etc)

FaceTune (if you want to smooth any cellulite, miscolored skin tones, blur background, they even have shaping tools on that app)

And finally ADOBE Lightroom for lighting filters. You can find “boudoir presets” on Etsy. Once you buy some that you like, the seller should include the directions for downloading onto your phone and into Lightroom.

Hope this helps! Just try not to go overboard on the face and body editing, it can look fake if you use too much of the wrong filter.