Keep a Secret Rib Knit Tank

Find Your Fit

Use this guide as a general reference. Measurements and conversions vary by brand; each product’s size chart and fit notes take priority.

1. Women’s Clothing

For tops, dresses, sets, and outerwear, start with your usual letter size and compare your measurements with the product’s own size chart. Fit and stretch vary by brand and style. Product-specific measurements and fit notes take priority over a general chart.

Measure your bust, natural waist, and fullest part of your hips.
Check whether the listing shows body measurements or garment measurements.
If between sizes, use the listing’s stretch and fit notes, or contact us for help.

Boutique Denim Sizing

Some denim styles use odd-numbered sizes. As a starting point for those styles, an even U.S. size 2 corresponds to boutique size 1, size 4 to 3, size 6 to 5, size 8 to 7, size 10 to 9, size 12 to 11, size 14 to 13, and size 16 to 15. This conversion does not apply to tops, dresses, letter sizes, or plus-size denim labeled 14W–24W.

Always follow the specific Judy Blue, Risen, or RFM listing’s measurements and fit advice. Check waist, hips, rise, and inseam before choosing your denim size.

2. Men’s Clothing

US Size	Chest (in)	Waist (in)	Hip (in)	Notes
XS	32–34	26–28	32–34	Slim fit
S	35–37	29–31	35–37	Standard
M	38–40	32–34	38–40	Standard
L	41–43	35–37	41–43	Relaxed
XL	44–46	38–40	44–46	Relaxed
2XL	47–49	41–43	47–49	Extended
3XL	50–52	44–46	50–52	Extended

3. Kids’ Clothing

Girls & Boys (Ages 2–14)

Age	Height (in)	Chest (in)	Waist (in)	Hip (in)
2T	33–35	20–21	19–20	21–22
3T	36–38	21–22	20–21	22–23
4T	39–41	22–23	21–22	23–24
5	42–44	23–24	21–22	24–25
6	45–47	25–26	22–23	26–27
7	48–50	26–27	23–24	27–28
8	51–53	27–28	24–25	28–29
10	54–57	28–30	25–26	30–31
12	58–61	30–32	26–27	32–33
14	62–65	32–34	27–28	34–35

4. Shoes

Women’s Shoes (US)

US	EU	UK	Foot Length (in)
5	35	3	8.5
6	36	4	8.875
7	37	5	9.25
8	38	6	9.5
9	39	7	9.875
10	40	8	10.25
11	41	9	10.5

Men’s Shoes (US)

US	EU	UK	Foot Length (in)
7	40	6	9.625
8	41	7	9.9375
9	42	8	10.25
10	43	9	10.5625
11	44	10	10.9375
12	45	11	11.25
13	46	12	11.5625

Kids’ Shoes (US)

US	EU	UK	Foot Length (in)
7C	23	6	4.75
8C	24	7	5
9C	25	8	5.25
10C	27	9	5.5
11C	28	10	5.75
12C	29	11	6
13C	31	12	6.25
1Y	32	13	6.5
2Y	33	1	6.75
3Y	34	2	7
4Y	36	3	7.25

5. Jewelry Sizes

Rings (Women’s & Men’s)

Size	Circumference (mm)	Diameter (mm)
5	49	15.7
6	52	16.5
7	54	17.3
8	57	18.1
9	59	18.9
10	62	19.7
11	64	20.5
12	67	21.3

Bracelets & Bangles

Size	Circumference (in)	Notes
Small	6–6.5	Fits petite wrists
Medium	6.5–7	Standard fit
Large	7–7.5	Wider fit

6. How to Measure

Clothing: Bust, waist, hips as shown in our sizing diagram.
Feet: Heel-to-toe measurement for shoes.
Jewelry: Use a ring sizer or string around finger; wrist with tape.

7. Still Unsure?

Contact our fit concierge for personalized sizing help.
Check our fit guide videos for clothing, shoes, and jewelry.

💖 Shop confidently – from head to toe and fingers to wrists!

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Keep a Secret Rib Knit Tank

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