Do you think this dress is appropriate for a wedding (casual)?

My partners dad is getting married in January, the wedding will be taking place in a church (Anglican). I was thinking of just wearing a dress I already have, cute blue sun dress. It has a slit up the leg but I have stitched the one on mine closed to just above the knee. The wedding isn't going to be super formal, partners dad said my partner could just wear jeans and a button up if he wants to.

Do you think this dress is appropriate for a wedding (casual)?

Let me know what you think and what things would look cute to pair with it! Accessories etc!

Do you think this dress is appropriate for a wedding (casual)?
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