Usually when a top has shirring elastic, and it is too big, the solution is to unpick the shirring and restitch to make it tighter. However this is an alternative solution to a top with shirring or elastic at the back which can be taken in.
by Marigood Suns
by day la hanh
by Toys Channel
by Deerest Dahling
by Liz Drake
by My Fashion Diarry
by Top Tips & Tricks