If you can afford to spend a little more, look at this Lanvin Oxford Shirt. While the price is very reasonable, this product is an easy wardrobe update. You might also want to consider this Lanvin Shirt. It's an attractive option both price and quality-wise.
If you can afford to splurge, then what you're looking for is this Lanvin Button-Front Shirt. It's more expensive but worth your money. Another product we're drooling over is this Lanvin Shirt. It's expensive but you get what you pay for.