If you're a bargain shopper, we recommend checking out this Gucci Button Front Blouse. While the price is very reasonable, this product is an easy wardrobe update.
If you're not a thrifty type, then what you're looking for is this Gucci Tunic. It's more expensive but worth your money. While you're at it, also have a look at this Gucci Long Sleeve Blouse. Yes, this item is expensive, but it does not mean it's not worth it.