If you are above a size 12 and were thinking of getting this just go ahead and stop thinking haha This is a 16 and no it is not zipped. it is not even pulled up all the way. The sleeves are very large and plenty of room. The rest of this fits like the traditional lilly shifts. So of you normally cannot get into those, you won't be able to either this either. Love the print...it's very fun...but I would have to lose about 90 lbs to get into this size 16 ...