Five Stars are fine - depending upon which ones they are. This is from the Gov Medals Website.
Nine stars were issued for the campaigns of World War 2. The colours of the ribbons have symbolic significance and are believed to have been designed personally by King George VI. No more than 5 stars may be awarded to one person. Those who qualify for more are awarded a clasp with the title of one of the stars to which they qualify. The clasp is then attached to the ribbon of one of the other stars.
If you qualify for 2 or 3 of the Atlantic, Air Crew Europe and France and Germany stars, the first star earned is awarded. You will then receive a clasp with the title of the second star earned to be worn on the ribbon of the first. A third star or clasp will not be awarded in this case.