The 34F bra has a bigger band than the 32FF bra. The cups are quite similar in both bras.
Comparing a 34F with 32FF in Panache Andorra Plunge (5676)
30F - Panache » Andorra Full Cup Bra (5675)
Fit check] + Recs? Panache Ana Plunge & Tango Balcony (32E) : r/ABraThatFits
34FF - Panache » Andorra Plunge (5676)
Panache » Andorra Plunge (5676)
30 SECOND BRA REVIEW - Panache Andorra Full Cup Bra - 30FF Cup Lingerie Model
Panache Andorra Plunge Review: 28H - Big Cup Little Cup
36GG - Panache » Andorra Full Cup Bra (5675)
I'm confused with Panache's sizing system. The label says that both the US and UK size are 30G, but aren't those two different sizing systems? : r/ABraThatFits
Fit check] Panache Tango plunge 32F, cups wrinkling on bottom and sides : r/ABraThatFits
Panache Andorra Full Cup Underwire Bra (5675),36FF,Warm Taupe
Comparing a 34J Panache Andorra Full Cup Bra (5675) with a 34K Bravissimo Inspire Sports (AU27)