it's too common for me, sorry.
would be great if you provide more source (more pic/snapshot, video, catalog number, cover)
pftion i found the picture on this site
https://www.sankakucomplex.com/2010/03/21/large-breasted-idol-gallery/ it's like yumi sugimoto at glance, but im not sure thats her
of course that's not her..
I agree it's ryo uehara.
Looks like a blast from the past to me... Ryo Uehara (上原綾)...