― I had to share this invaluable tip for all us ladies, girls out there from BellaMUMMA. These tips are vital for a perfect fit bra every time. Remember to adjust your bra straps. My daughters come to me every now and again for me to adjust their bras. ∙ Follow these tips to keep the fit perfect... ∙ Tighten the straps until they fit snugly on your shoulders. ∙ Make individual adjustments for each cup. It's common to find that you may adjust one strapmore tightly than the [...].