I wonder if Beshine knows about Foxy
I think about this too.
I know the inverse is true, as Foxy has seen herself compared to Beshine. She hasn't said anything additional about it, but she's seen internet comments where people beg her to surpass Beshine one day. Thankfully, she hasn't said anything to contradict these requests. 
Though I find the size of Beshine's boobs wonderful and would like to see Foxy achieve a similar size, I would only encourage her to expand to a point short of where the burden outweighs the love. Because of the huge area of attachment Beshine has developed over the years, I believe Foxy has quite some distance to go, however, she does have a certain advantage and one disadvantage in my humble opinion. One advantage she has is in her already established round, absolutely fake shape that would be a basis going forward with new and larger implants. The disadvantage is height; Foxy's breasts are inches lower, not stemming from arm level, which makes the additional weight increasingly harder to offset by the overly upright posture Beshine adopted early on and prevented back pain/stress. Another advantage I think Foxy has at this point is that with her skin already stretched, placing a internal bra should produce almost flawless results, with less likelihood of things slipping out of place with further expansion. With this implant weight, one bad bounce is quite liable to result in muscle/skin tears, just ask Allegra, so the internal becomes a necessity if you want everything to stay exactly as planned.
In any event, you have to be able to enjoy your boob size and in order to do that you have to love experiencing all the little ways they make your life "not normal." You find your hands are drawn to them unconsciously, which may create embarrassing situations, but you stay above that, because the bigger the boobs, the more frequently these situations arise. Wardrobe malfunctions, boobs bumping into things; you have to know that these things happen and somewhat enjoy when they do. Just feeling the weight of your chest when you lay down. You have to love the feelings huge boobs give you.