Sweatpants For Women – Best Price!

Hey, i’m buying Victoria’s Secret’s Pink yoga pants for the first time, and i’m buying them online.

http://www.victoriassecret.com/ss/Satellite?ProductID=1265343250781&c=Page&cid=1287144199947&pagename=vsdWrapper

I’m normally an XS in woman’s sweatpants, but I don’t want to take a chance of getting the wrong size. So, ladies, do these sweatpant run small so that I might need a size S instead of XS? I want answers from people who own these yoga pants, please. And if you don’t, you can still answer if you know someone who owns these. I can’t find the Victoria’s secret size chart online either, and I have not bought any sweatpants from them. I LOVE these yoga pants!
btw, i’m not gonna wear them for yoga. just like a normal outfit. and i don’t like it too tight, same time i don’t like it loose. I don’t want it super tight on my upper portion of my thigh and butt.
Also, do their T-shirts ot Tanks run small?

These are my measurements.

my bra size is 32B
and im 5′4

waist-24.5in.
hips-31in.
torso-20 inches long
and my legs are 35 1/2 inches long

so what sizer do you think i am

O and heres the size chart-http://www2.victoriassecret.com/commerce/moreInfo.vs?namespace=moreInfo&prnbr=EC-242645&cgnbr=OSPNKSPLSWP&moreInfoInd=sizeChart&groupCd= &dispMode=STANDARD&buttonClicked=btn_size_chart&selColor=

and i just want to know because im not sure if i did the size right