>>9833994Barbie BMR1959 or Barbie Looks with the blonde pixie cut, they are both 19$ on amazon and have MTM articulated bodies (including ankles). You can find MTM dolls on ebay for even less if you don't mind an unboxed used doll.
If you buy used make sure the joints look like this, sometimes sellers list dolls as "made to move" when they are not. Here's a cool guide that shoes the MTM articulation:
https://www.toyboxphilosopher.com/2015/11/made-to-move-barbie-by-mattel.html?m=1