If you'd rather not spend much, this Asos Tank will fit the bill. It's a great choice, while not very expensive. You might also want to check out this Asos Cropped Top. It's a product you'll fall in love with which also doesn't cost a fortune.
If you can afford to spend a little more, you're in luck with this Asos Crew-neck T-shirt in stock and waiting for you. You are guaranteed to love this piece.