Is it normal?

Is it normal for a child who is 21 months old to be so into body parts? Like my daughter has doll babies and she loves to spread the legs apart and touch the doll. Now I use to let her go with me to the restroom but I had to stop that because she was making it her business to see my lady parts. And yesterday I was getting out the shower so I had a towel wrapped around me...well my towel fell as she was climbing in my lap and my breasts were exposed and she tried to suck my nipple and I have never breastfeed. So I'm a little worried. Please no bashing