From left to right:
Mini Blooms - Petite Blooms - Full Blooms - Bespoke Blooms.

Approximate measurement:

Mini - approx. 9cmW x 16cmH

Petite - approx. 20cmW x 30cmH

Full Bloom - approx. 35 cmW x 40 cmH

Bespoke - approx. 40 cmW x 50 cmH
(slightly larger than Full Bloom + more flowers)

W = Width
H = Height