My studio is tiny, so i can only shoot wide angle.
50mm 1.4f is my favorite all-around lens
100mm macro for closeups
plan your lenses around your studio or your studio around your lenses. if you've got only telephoto lenses and a tiny studio, you're going to get.... well pretty much just a head in frame. and if you've only got wide angle lenses and a huge studio thats just a waste of space.
don't worry about wide angle lens distortion as long as you know how to use photoshop for optics compensation.
it has a lot to do with working distance which will be different between crop and full-frame (for the same focal length). i use a 24-105 on full-frame much of the time in the studio although sometimes i'll use the 17-40 for those down low wide angle shots. for boudoir i'll use my 24-70 because it can go to f2.8 (vs. f4 for the 24-105).
but i've seen great glamour shoots done with a 50f1.8
i think it's good to have a variety of focal lengths and then you can experiment and see what works best for you. some prefer to use a 70-200 but if i get back too far then i have trouble communicating with the model and seeing her expression.
I prefer to use a 70-200 with a full frame camera. If there is not enough space, I use a 24-105 and try to stay away from the widest part of the lens unless I am really trying to make something stand out or appear larger.
Since you will be using studio lights I wouldn't be concern about lens sharpness- just about all are sharp stopped down to f/8. What comes down to is giving the model more of a flat look and the length of the studio. The studio I usually work with is not that big so my nikon 28-70mm 2.8 would do. I wouldn't hesitate on using my kit lens.