Rihanna was in a Swiss emergency room Monday night -- but don't worry, she's alright.
After performing in Zurich, RiRi hit up a Hirslanden hospital to, according to her rep, have an "injured rib" checked out.
We're told it was nothing serious and "all is ok."
The "Rude Boy" singer performed last night in Lyon, France -- and continues her "Last Girl on Earth" tour tonight in Marseille.
