'Falmouth Bay' blooms are 120 mm (4 3/4 inch). Has a nice wide, frilly cup.
Another possibility: 'Impreza' blooms are 110 mm ( 4 1/3 inch). With a wide, frilly cup.
'Princess Zaide' is another possibility, which I found on Brecks site. I couldn't find a bloom size but it has a similar look with a wide, frilly cup.
I suppose there are many more possibilities!