So I copied an idea from sewweekly a few weeks ago, instructions here
and an apron from Amy Carol's book, Bend the Rules Sewing, and got this:
For the skirt I used 2.5 metres of cotton, about £15, plus a zip (39p in sale). For the apron I used an old single sheet I was given so that cost nothing!
I even made a mini outfit for Mia. We went to take the pictures this morning in the local playpark, the glamour of it, I expect the people who live around must have had a good laugh....