Ally from team Marvell Lane was so helpful with my Isobel top exchange!
I purchased a size 10 but had to return it for a size 8 because it was too roomy across the bust and shoulders for me.
It’s worth noting for other busty but kind of narrow framed gals. Size down, not up in this top!
I am an 8G in Marvell Lane bikini tops and a true 10-12 dress size, so I thought too I’d be a 10 in the Isobel top but I had to exchange it for an 8.
My size 8 arrived and it fits perfectly! Still nice and loose/ floaty but not sliding down off my shoulders, and I can tie the knot at the front without it bunching/ gaping.
Hope this helps someone trying to choose a size!