These overalls to a family reunion (pic included)?

I have a family reunion coming up and I'm going to see family I haven't seen in a long time. I wanted something cute and different to wear that wasn't a dress or same old jeans I always wear. So I bought these really cute overalls for something different to wear. I think they are cute and even a little bit sexy. They expose my upper chest and shoulders and my back so I will wear a low cut top for coverage and they button up the front from my crotch to the top. They are pretty tight and then flare out below my knees into bell bottom leg openings. They are extremely long with a 36 in. inseam and I'm not that tall so I plan to wear 6 inch platform heels with them but they will be hidden because of the long pants length. These are supposed to be feminine and worn with heels and I don't want to hem them just for wearing to the reunion and they are way too long for flat shoes. The reunion will be at a park in a large gazebo type thing we have rented for the day and we'll have food catered in. I'll spend most of my time on concrete so not too worried about my high heels on uneven ground but i just want to know is this outfit cute? Any suggestions? My hair will be in a ponytail and I'll be wearing my usual makeup and acrylic French tip nails. Should I add anything else to this outfit to make it cuter? Thanks! :-)

Picture of the overalls...