I have told quite a lot of people about my little side now, because I am a stubborn opinionated person who doesn't hide anything from anyone.. I guess its because if I did get a bad reaction I am confident enough to laugh and stay completely assured that there is nothing wrong with being a little, because there isn't. I explained DDLG as a part of who I am, but I am not sexual in littlespace at all, no bad reactions either, not even towards the people who are sexual.
The people I explained it all to are all very different people in their views, ages, everything, yet they are all so supportive, some even found their little/care giver side.. I can honestly say I have had no bad reactions.. Hell I even cried and confessed all the little stuff (bottles, paci's, sippy cups, etc) that I had in my room to my two of the guys I live with because I was scared people would find them (I hadn't slept for 38 hours because decided I had too much to do, so I was cranky and not thinking straight).. both litrally turned around and said "so whats the problem? there is nothing at all wrong with that.. you're just upset and need sleep", I also told my auntie, she actually decided she was one too, I can honestly say, from my friends, to family, to housemates.. I have had no bad reactions at all, they have all been so positive and barely even reacted, they just seen it as normal, one even said "don't ever stop being a little, because its a part of you and if you stopped being you, well it would kind of suck!"
Because the people who matter won't judge and those that judge don't matter.
My point is, never be afraid to tell someone that you are a little, because if they care they will support you and if they don't support you they don't deserve you You are normal, you are amazing and you should always be you.