Banana Republic to Diane von Furstenberg clothing size

The short answer

Banana Republic 2 is Diane von Furstenberg S by the two brands' own charts.

Both brands publish the body bust each size is cut for, so every row matches a bust, not a letter or a number.

Every Banana Republic size read across to Diane von Furstenberg. US sizes on the left, Letter on the right.
Banana Republic	Banana Republic builds it for	Diane von Furstenberg, by chart	Same label	Diane von Furstenberg builds it for	Diane von Furstenberg also prints
000	bust 30.5 in, waist 24 in, hip 33.5 in	XXS	XXS	bust 31 in, waist 24 in, hip 34 in	US 00
000	bust 30.5 in, waist 24 in, hip 33.5 in	XXS	XXS	bust 31 in, waist 24 in, hip 34 in	US 00
000	bust 30.5 in, waist 24 in, hip 33.5 in	XXS	XXS	bust 31 in, waist 24 in, hip 34 in	US 00
2	bust 33.5 in, waist 27 in, hip 36.5 in	S	XS	bust 33 to 34 in, waist 26 to 27 in, hip 36 to 37 in	US 2/4
4	bust 34.5 in, waist 28 in, hip 37.5 in	S or M	S	bust 33 to 34 in, waist 26 to 27 in, hip 36 to 37 in	US 2/4
6	bust 35.5 in, waist 29 in, hip 38.5 in	M	S	bust 35 to 36 in, waist 28 to 29 in, hip 38 to 39 in	US 6/8
8	bust 36.5 in, waist 30 in, hip 39.5 in	M or L	M	bust 35 to 36 in, waist 28 to 29 in, hip 38 to 39 in	US 6/8
10	bust 37.5 in, waist 31 in, hip 40.5 in	L	M	bust 37 to 38.5 in, waist 30 to 31.5 in, hip 40 to 41.5 in	US 10/12
12	bust 39 in, waist 32.5 in, hip 42 in	L or XL	L	bust 37 to 38.5 in, waist 30 to 31.5 in, hip 40 to 41.5 in	US 10/12
14	bust 40.5 in, waist 34 in, hip 43.5 in	XL	L	bust 40 to 42 in, waist 33 to 35 in, hip 43 to 45 in	US 14/16
16	bust 42.5 in, waist 36 in, hip 45.5 in	XL	XL	bust 40 to 42 in, waist 33 to 35 in, hip 43 to 45 in	US 14/16
18	bust 44.5 in, waist 38 in, hip 47.5 in	not made	XL	not published	not published
20	bust 47.5 in, waist 41 in, hip 50.5 in	not made	not published	not published	not published

Tinted rows change label or sit between two sizes. 2 sizes have no counterpart on the Diane von Furstenberg chart. Read from the two charts only; no formula and no averaging.

What wearers say

Charts describe a garment, not a fit. We do not collect fit reports for this category yet, so this table is the two brands' own claims and nothing more.

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Sources

Banana Republic size guide, read on 2026-09-18.
Diane von Furstenberg size guide, read on 2026-09-18.

Diane von Furstenberg to Banana Republic