Pattern: Little Pip's Acorn Hat (rav link)
Yarn: Noro Kureyon in colorway 270
(I got mine at our LYS but this is a good online yarn resource)
This hat definitely benefited from a good blocking, right off the needles I was worried it would be to small, but after blocking it might even have a bit of growing room! Very fun pattern, don't be intimidated by the bobbles, once you start them they are very easy and SO fun to do!