I haven't been here for awhile, hence I didn't see the request for links. Sorry.
http://www.redheart.com has the "Track Stitch Beret" #WR1789 and it looks like a nice slouch hat when it's on when it lies down on the back of the head. DD loves hers.
http://jjcrochet.com/blog/mens-free-crochet-hat-pattern/ This is a men's hat, but I believe a woman can wear it, too. The cuff is "tricky", but fun to do and it turns out great. I made it in forest green for our Dson.
The "Very Easy Slouch Beanie" is a ravelry pattern. I don't know if it's okay to post a link to a raverly pattern here on another site because of copyright, etc..., since you need to be a member of ravelry to access their free patterns.
It's called, "Ravelry Very Easy Slouch Beanie pattern" by Acquanetta Ferguson. You can join Ravelry for free with a user name and password, too. If you go there, if you become a member, there will be pages and pages of slouch hats, too. I made this one in 2 rows white, 2 rows black and DD absolutely is crazy in love with this hat! She's very petite and is 4'9" tall and she's turning 41 in Dec., so she's an adult woman and loves how it looks on her. You can make this hat in a solid color, stripe it every row or every 2 or 3 rows. Whatever your fancy is.
The "Track Stitch Beret" has Treble crochets in it and SC, too, so it makes a unique pattern. It makes the beret look like you bought it at a high-end dept. store. I did it in off-white, which added to the richness of it. I want to make myself one, too. The designer was an awesome one! They recommended "Eco-Cotton Blend" yarn, but I used Red Heart Super Saver yarn instead. It comes in sizes of Small for 20" or Medium for 22". I did it in 20" and it fit both DD's and my heads. When you go to the site, they also have a blue one pictured, so you get a good idea how unique the hat looks. I'd give it a 5-star rating, if they had rating systems there!