First thing's first, the dress:
This short-sleeved version is almost better because it has a pocket and little flowers sewn in to the tips of the collar! It's size Medium, and only $26 USD on Etsy, click to buy it here!
I think Suzy would most definitely wear this one to church, or maybe on a cool autumn day (but seriously). It's size S/M and $48 USD on Etsy, click to buy it here!
And last but not least, Suzy would totally wear this one on a warm summer day, and perhaps for an ice cream date with Sam. It's size Small, and it's $58 USD on Etsy, click to buy it here!
Second thing's second: the shoes & socks
These are actually cheerleading shoes (?) but they look just like Suzy's and they're pretty affordable, between $30-40 USD, and come in all sizes! Click to buy them on Amazon here!
The socks are pretty basic, I like these ones from Nordstrom because they have a subtle pattern in the fabric, and they come in 4 colors. They're 3 pairs for $33 USD, click to buy them here!
These one's half ruffles like Suzy's, so cute! And they're only $4.40 a pair. Click to buy them here!
And, third thing's third: The accessories
These are the closest I could find to Suzy's arguably coolest accessory. They're $24 USD a pair, click to buy them here! (Scroll down a bit, they'll be on the first page) P.S. they also have full beetle pins that you could easily attach hooks to, and make your own like the ones Sam made.
Get a maroon beret just like Suzy's for only $6.99, it's on sale, yay! Click to buy it here!
The sparkly aqua eyeshadow. Get this one for only $3 USD from Etsy, click to buy it here!
And last but not least vintage binoculars with leather case, $65 USD on Etsy, click to buy it here!