Joules sizing help please

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I have just ordered this www.next.co.uk/g7t40s1#660677x54 in a 16 but am worried it won't fit . Are they generous or true to size, it does say loose fit so I'm hoping it will be forgiving

I've found joules sizing varies depending on the style. I have three different sizes in my wardrobe at the moment, before ordering i always read the customer reveiws to get an idea of what size to buy, the reveiws on joules website for the blouse you have ordered all say the fit is true to size so should be ok.