My country need not change her gown — American Flag

My country need not change her gown, 1
Her triple suit as sweet
As when 'twas cut at Lexington,
And first pronounced "a fit."

Great Britain disapproves, "the stars"; 5
Disparagement discreet,-
There's something in their attitude
That taunts her bayonet.
(F.1540/J.1511)
[1] country, her:: the United States.
[1, 2] gown, triple suit:: the triple-color Stars and Stripes.
[3] Lexington:: Lexington, Massachusetts, where the revolution started in 1775.
[4] fit:: an attack.
[5] stars:: the fate of America; the stars in the flag.