Coco and her sister Kristy Williams really like to do yoga together -- but sometimes it gets a little weird ... like, posing-on-top-of-each-other weird.

Check out Coco's tutorial of 13 partner yoga poses and give them a shot ... if you can find a willing buddy, that is.

13. The Sweat Suit Scissor

12. The Sidewalk Spread-Eagle

11. The "Help Me Find My Contact"

10. The Fireplace Face Away

9. The Awkward Arch

8. The Leather Boot Leg Lift

7. The Faux Fur Fanny-To-Fanny

6. The Wet Balcony Worrier

5. The "Let's Make That Guy Over There Uncomfortable"

4. The "You're Sure About This, Kelly?"

3. The Reach For The Moon

2. The "Ouch, This Hurts"

1. The Crushing Coco, Sleeping Sister