A button-down shirt with a pencil skirt looks great with a blazer and gives a dapper look.
A short, draped blazer-style dress with a pair of heels will a unique look, and you can always complete this look by wearing your favourite pair of sunglasses.
If you want a sharp casual look then pairing a casual blazer with a pair of skinny jeans/leggings is a go-to look.
Throwing a blazer on a turtleneck t-shirt will give you a cute and stylish look. Complete the look with Converse shoes to make your outfit charmer.
Standard Two-button blazer is a nice pick for work as it will give you a nice and sharp look and will be great for an important meeting or an interview.
A black striped oversized blazer with a V-neck T-shirt and a pair of mommy jeans will give you a nice retro night mood.
If you want a casual summer look then pair your blazer with a V-neck t-shirt tucked inside washed denim shorts and you can always add a satin scarf for a bit of accessory.