13 Stars

By law, a star is added to the U.S. Flag on the 4th of July following the admission of a State(s) to the Union.
Contrary to popular belief, the first official U.S. Flag was not the Betsy Ross Flag (13 stars in a circle) but the staggered star pattern shown
in the below 13-star flag. It is important to note that no U.S. Flag ever becomes obsolete. Each flag shown is still a legal flag and may be flown at any time.

1777-1795 

(CT, DE, GA, MD, MA, NH, NJ, NY, NC, PA, RI, SC, VA)