Rather than the one she is holding I am more concerned about her potentially knocking off and smashing all those bottle on the shelves behind her with those huge oh so fluffy tails of hers.
Also Yukari is probably pissed that we are all spending so much time looking at Ran while she is trying work the sexy.
Edit: Looking again I instead have a mental image of a bottle falling off and disappearing into her tails for safe retrieval from the fluff dimension later. That are Chen is hiding in there getting wasted as we speak.