Neca rolls out Chell outfit and accessories, and an Atlas Portal Device
Chell's jumpsuit comes in a range of XS-XXL. Those long-fall socks are hilarious. Then there's the Atlas Portal device to go with the original, the P-body, or the Cave Johnson versions. Also, a stand to display all of those Portal Devices.
Good luck getting . . . any of this stuff. Just went up a couple of hours ago. Links to all of the places to get them is on the Neca page.