House of Worth ca. 1883
The Bonnet is also from the Met and dated 1883. Check out that ombre ribbon!
Perhaps these would not have been worn together but I think visually they compliment each other. The ombre picks up the light brown of the cummerbund (I feel silly to ask since I study costuming but I believe cummerbund would be correct?) and the roses pattern in the fabric. I just find the whole outfit flattering and pleasing to look at :D
And The Met says: This quintessential bonnet of the early 1880s belonged to Amelia Beard Hollenback (1881-1917), wife of prominent financier and philanthropist John Welles Hollenback (1834-1923). While their primary residence was in the Brooklyn neighborhood of Clinton Hill, the Hollenback family spent summers at their mountaintop retreat in Glenn Summit (Pocono Mountains). Worn in the summer of 1883, Amelia likely wore the bonnet for formal teas, luncheons and lawn parties. As is apparent in the ombré ribbon and artificial flowers, millinery ornamentation were extraordinarily crafted and highly regarded in this period.