Is it Lex from the first AVP movie? Apparently not, it's actually Machiko Noguchi from the comic book and novel series of AVP. Also, from what I read, she appeared in the realm of AVP much earlier than Lex in the movie version. Here's a bit of bibliography about Machiko:
The figurine displayed at Tokyo Toy Show 2008 was Hot Toys' Hot Angel x Movie Masterpiece 1/6 She Predator Machiko. Stands about 30cm tall, this figurine features 20 points of articulation, on top of all her Predator gears including articulated shoulder cannon, extendable spear, closed Shuriken, wrist blades, Predator mask with warrior scar and many others. A display base is also included.
To be available by Quarter 3 of 2008, the price from XL-Shop Dotcom is RM508 (US$155.4).
On the other hand, if you're a fan of the Predator's adversary, the Xenopmorph, Hot Toys has an offering that might interest you as well: ^^
1/4 Alien collectible bust- about 30cm tall, complete with partial Alien body and stand with 'ALIEN' logo. To be available by Quarter 3 of 2008, the price from XL-Shop Dotcom is RM250 (US$76.5).
Display this in your room to keep unwanted visitors away XD
All images from Hot Toys.