Shirts from farfetch.com
If you'd rather not spend much, this Golden Goose Deluxe Brand Button Shirt will fit the bill. It's a great choice, while not very costly. Another strong contender for your wardrobe is this Equipment Classic Shirt. While the price of this piece is not too high, it will certainly attract a lot of attention. You may also want to look at this Jil Sander Navy Classic Shirt. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking for a happy medium, why not check out this Dsquared2 Denim Shirt. While the price is very reasonable, this item is an easy wardrobe update. You can also consider this Short Sleeve Button Down Shirt. It's an attractive option both price and quality-wise. Alternatively, opting for this Celine Short Sleeve Button Down Shirt is a good choice as well!
If you want to splurge, then you won't be disappointed if you check out this Stella McCartney Denim Shirt. It's an expensive but smart option. While you're at it, also have a look at this No.21 Button Shirt. Yes, this item is expensive, but it does not mean it's not worth it. And one more item you might be interested in is this Gucci Button-Up Shirt. 'Cause you deserve nothing but all the finer things!