Here it is! The awesome ladies straw hat worn by Julia Roberts in 'Runaway Bride' is available online. Soft, supple straw in a light, comfortable fit in unbreakable straw with shapeable brims.

Sizes
XS=21-1/2" (6-3/4),
S=21-5/8 to 22-1/8" (6-7/8 to 7),
M=22-1/2 to 23" (7-1/8 to 7-1/4),
L=23-1/8" to 23-3/4" (7-3/8 to 7-1/2),
XL=24-25" (7-5/8 to 7-3/4).

Hat Size Chart
Hat Shape Chart