How can I prevent my 22-month-old from taking off his clothes and diaper in the crib?

I have a set of 23 mth old twin boys. They have an older brother that has taught them how to unsnap onesie. So to keep their diapers on we have to first put big boy underwear on over their diapers, then over that we put either jammies or a pair of shorts on over a onesie. So to get their diapers off they have to take jammies or shorts off, then onesie if on, and the underwear and then diaper. Generally we can get to them before they get their underwear off. Though I will be honest there are times that even that does not always work. They are getting ready for potty training because they will always tell us what they have done in their diapers, but so far we have not had 5 days of dry diapers in the mornings to really start training. I hope that once my twin girls get this old they will be calmer and not take each others diapers off like their brothers do. So just layering more clothes on seems to help. The more clothes the longer it takes to get diapers off.

I have to put Easy Ups on my daughter when she takes naps or goes to bed. They are the pull on diapers (without tabs) and she can't pull them down to take them off!! It has saved me from washing the sheets every night!

My daughter just LOVED to take off her pajamas and her diaper! I tried putting the onesies on under her pajamas and that only worked about 50% of the time. Finally, I noticed that she really liked to unzip the zipper, and with a pajama that she has that has a snap over the zipper (at the top, near her neck), she has never been able to just unzip that one! So, I bought 3 more of those and I keep them in the laundry rotation often! In a pinch, I would put a onesie on, and then pants and a tee shirt (no zipper, no easy access). That seems to work too.

My son is a little over 2 and has been doing the same thing. I too tried the onesie trick but my little guy just sticks his hands through the legs and takes his diaper off that way! I finally resorted to putting his pj bottoms on, THEN the onesie. That seems to have done the trick...for the moment anyway! I figure if he figures that out, it's time for the potty training.

I've found a little naked baby several mornings also! My 14mo started that at 10months. I only buy zip up jammies and use a cloth diaper safety pin to secure the zipper to the top of the jammies. When she learns to work the safety pin I'm in trouble, but for now it's done the trick.

My daughter did this too when she was about 22 months as well. I put a onesie on under her jammies too, so that at least if the jammies were off, the diaper was still on. She has left that alone now. If/when she figures that out, it was recommended to me to put the onesie on backwards. Luckily I haven't had to resort to that yet, and she even leaves her jammies on now. Thankfully I haven't had to change the sheets and wash her lovies quite so often!

My twins wont keep their pj's on either. But the onesie with tight snaps works. The onesie cant be too loose or they slip their whole body out the neck!!