Can someone plz help me with this double icing problem
Welcome 
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…well just seeing this… (and for example not the outliner) it might be exactly this… somewhere on the road you doupled your icing object/ geometry/ modifier… ??
By the way: in blender try… Window → Save Screenshot …
…nobody needs to know what other apps you are running… 
( but maybe next time… and also maybe just using a jpg with ~70% compression… ?? Would be less extensive for the storage space, download time to see this… and finally to help you (some people have to pay a lot for internet) and even the server itself costs money… 
But feel free to add any info so someone can help you a bit more…
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… and it seems you have this problem only for the most front piece of icing… (because of the x-ray toggle i see: the other seems to have not this… )… so yeah… double check in edit mode… (at least scale is correct… one of the most made mistakes… )
You also have x-ray view on and I assume a solidify modifier…that will show both sides of the icing…
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