Aah bra sizing request for Rhonda Shearer

I would love the Aah bras to be offered in 4 and 5X on HSN. 3X is too tight. I know Walmart sells 5X so I know they come in larger sizes. PLEASE, RHONDA, help me. Yours are the only bras I wear but I only have 3 that fit. HSN offers such nice colors and styles, I’d love to be able to order many more if you’d please make 5X available!!!