Have a look at this simple vest that is made of granny squares and leftover yarn! Though the granny squares are crocheted, the armholes, hem, and collar are knitted. However, you can also choose to crochet the whole top. It comes in adjustable sizing.
Crochet Sweater Vest
"Simple two panel construction for this beginner friendly crochet sweater vest. Made using #6 super bulky, this crochet sweater vest works up quickly and makes for a really warm, cute top garment. Includes US women's sizes XS-XXL. I made this sweater vest for all the crocheters that want to make a chunky sweater but don't want to learn how to knit! There's also a pattern for the knitted version of this sweater if you're multi craft inclined. "
Easy Sweater Vest
"This Modern sweater vest with cute collar or a top free crochet pattern is perfect for summer and everyday wear or just around town. This crochet pattern is so easy to make and uses only a basic crochet stitch. I make this sleeveless top with cotton yarn and 4.0 mm crochet hook to create the breezy airy look, perfect to mix and match with jeans or skirts. Follow along the simple-to-read pattern and make your first summer crochet vest."
Striped Vest Free Crochet Pattern
"Great crochet vest pattern in sizes XS to 5XL. It's a striped sweater vest pattern, but can easily be made in one solid color as well. Amazing women's crochet vest that can be used throughout the fall and winter season. Try this easy crochet pattern and enjoy wearing this crochet vest with jeans and a shirt, or styled as you prefer. It's an easy pattern, with sizes from XS to 5XL. This pattern is a great crochet sweater vest to wear during the colder season. With a shirt or top, with jeans or a skirt. Make this women's crochet vest in one solid color or with the stripes as suggested. "
Peplum Summer Top
"The Peplum Summer Top is an easy crochet summer top for advanced beginners. The shoulder shaping and elegantly rounded v neck add femininity to this loose fitted simple peplum top. You only need the single crochet and double crochet stitches for this summer crochet top pattern. However, there is a bit of shaping (decreases) for the neck and armholes which can be a tiny bit more challenging for a complete beginner. But don't worry, the pattern guides you with detailed explanations and step by step pictures."
Crimson Collared Vest
"If you are looking for an elegant crochet outerwear pattern, this crochet vest would be a perfect crochet project to try. Since, it is designed by crimson red color worsted weight yarn and cable crochet stitches. You just need some experience with cable crochet. The vest has cable texture at the back, simple double crochet stitches at the U shape front which created a big collar. Absolutely, a lovely brooch to secure the front flaps is a good choice."
Savvy Sweater Vest Crochet
Aren't the waves of color lovely? It looks just like a Sashiko pattern. This is an advanced-level intricate crocheted vest pattern that all seasoned crocheters should try. It comes in sizes XS-2XL.