The band is pretty much the same in both bras. The 34GG bra has bigger cups.
Freya bras 34GG - 16 products
Freya Deco Moulded T-Shirt Bra Black Black 28D : : Fashion
Moulded Shapes Explained
Comparing a 30F with 28G in Freya Deco Moulded Plunge Bra (4234
32G - Freya » Deco Moulded Plunge Bra (4234)
Freya Women's Deco Underwire Molded Plunge Bra, Black, 28D at
Freya Deco Plunge Bra AA4234 Forever Yours Lingerie in Canada
Freya Deco Moulded T-Shirt Bra Black Black 28D : : Fashion
34GG - Freya » Deco Moulded Plunge Bra (4234)
Comparing a Freya Deco Moulded Plunge Bra (4234) with Freya Deco