Comparing a 28D with 30C in Cleo Brooke (5141)
The 30C bra has a bigger band than the 28D bra. The 30C bra has deeper cups than the 28D bra, but they are about the same width.
Comparing a Cleo Brooke (5141) with Panache Envy Balconnet Bra
Polk's Greater Miami (Dade County, Fla.) City Directory
28DD - Freya » Fancies Plunge Bra (1011)
30D - Cleo » Marcie Balconnet Bra (6831)
28FF - Cleo » Blossom (10581)
30D - Cleo » Marcie Balconnet Bra (6831)
28DD - Freya » Patsy Padded Half Cup Bra (1223)
30DD - Parfait By Affinitas » Charlotte Padded Bra (6901)
28D - Masquerade » Harem Plunge Bra (6576)
28E - Freya » Deco Moulded Plunge Bra (4234)
28GG - Cleo » Brooke (5141)