Now, 50 years after Jeannie paved the way for bra tops in public, non-bottle-dwelling women of all ages and shapes are trying the style. Some are even showing their belly buttons.

The largest sizes of those T-shirts, XL, roughly equates to a size 10. “Flore Flore is a bit fitted, but women, mothers, grandmas, all different body types wear it,” Ms. van Zuilen said.

If there's one piece of clothing present in nearly every wardrobe, it's the button-up shirt. Trend Report: A 'tightening' jawline serum, arch-supporting flip-flops, more IE 11 is not supported.

Size 16 is the new normal for US women American women have long been told that the average size is 14. But it's actually a size 16, according to a recent study.