Which of these 3 dresses for my University Grad Ball in June?

I'm trying to decide on my Grad Ball outfit and I'm having a bit of a crisis lol. I have two new dresses and one old favorite from shein but I can't tell if I'm overthinking the quality.

Dress 1 fits slightly loose at the waist. Dress 2 turned out to be a very buttery cream/beige color. Dress 3 is my old reliable but I'm worried it looks a bit dated or inexpensive.

Do these look okay for a June ball? I’m terrified of looking too much but I also don’t want to look underdressed. Which one has the best silhouette in your opinion? Any styling tips to make them look more expensive would be amazing!