If you're not planning on spending much, your best bet is this Marni Jacket. It's a popular item, while not very expensive. Another strong contender for your wardrobe is this Marni Coat. While the price of this item is not very high, it will certainly attract a lot of attention.
If you can afford to spend a little more, we've got your back with this Marni Blouse. This product is bound to become a total wardrobe staple. It's also worth considering this Marni Long Sleeve Blouse. This product is extremely popular and, just as importantly, not too pricey.