Hmmm...This one has me stumped. She's a Mattel doll, lower back and neck say 2010. She's only articulated at the shoulders and her head (she can turn her head side to side)
Amazon.com: Mattel Year 2010 Barbie "She Said Yes!" Series 2 Pack 12 Inch Doll - Together Again with Barbie Doll with Black and White Swimsuit, Silver Earrings, Pink Flip Flop Sandal and
2010 Mattel Fashionistas Swappin Styles Glam Barbie Doll No. T7413 NRFB for sale online | eBay
Holiday Barbie 2010 Doll - Entertainment Earth
BARBIE DOLL MATTEL 2010 Indonesia Vintage Clothing Baby Toy Figure Blond Girl | eBay