Dress re-vamp

I have been unpicking the straps of a sun dress today, which did not fit very well, and was annoying me as the straps kept falling down.
It has a low circular neckline and I am going to look on line to see if there is an easy way to re do the straps or make a new top part of the dress completely

the top of the armhole where the straps were attached

the top of the dress showing the circular shaped neckline