The 32E bra has a bigger band than the 30E bra. The 32E bra has deeper cups than the 30E bra, but they are about the same width.
30E - Cleo » Izzy Balconnet Bra (7721)
32E - Panache » Envy Balconnet Bra (7285)
30F - Freya » Fancies Plunge Bra (1011)
32F - Panache » Andorra Full Cup Bra (5675)
30DD - Gossard » Glossies Moulded Bra (6271)
32E - Cleo » Marcie Balconnet Bra (6831)
30DD - Cleo » Marcie Balconnet Bra (6831)
Cleo » Mimi Padded Balconnet Bra (8091)
Cleo » Mimi Padded Balconnet Bra (8091)
28HH - Cleo » Marcie Balconnet Bra (6831)
38GG - Cleo » Marcie Balconnet Bra (6831)
32E - Cleo » Hettie Balconnet Bra (9011)
Comparing a 30E Cleo Marcie Balconnet Bra (6831) with a 30F Cleo
65E - Simone Perele » Muse Triangle Plunge (12C347)