Skims vs Knix
Two brands, two ways of grading a size. Here is how Skims and Knix differ in system, range and fit, and which one to choose for your shape and your problem.
Skims or Knix, in short
Skims and Knix both label in US sizing. Skims runs true to size in the band and true in the cup with average wires; Knix runs true to size in the band, true in the cup, average wires. Range: Skims Alpha XXS–4X on most bras; numbered 32–46 on underwire lines / Numbered lines A–H; Knix Alpha (1–8 numbered-alpha) on wireless; numbered on select underwire / Wireless sizes span roughly 30A–44DD in the brand's grid. Convert your measured size into each and let fit decide.
Your measured size in both
Same body, two labels. Each result is your US size converted into the brand's system, then adjusted for how that brand grades. Same system, so the label matches: the fit adjustment is the difference.
Skims vs Knix at a glance
| Skims | Knix | |
|---|---|---|
| Sizing system | United States | United States |
| Bands | Alpha XXS–4X on most bras; numbered 32–46 on underwire lines | Alpha (1–8 numbered-alpha) on wireless; numbered on select underwire |
| Cups | Numbered lines A–H | Wireless sizes span roughly 30A–44DD in the brand's grid |
| Band grading | true to size | true to size |
| Cup grading | true | true |
| Wire width | average | average |
| Straps | Standard | Standard |
| Alpha sizes | Yes, some lines | Yes, some lines |
| Tier | Mid-market | Mid-market |
| Origin | US | Canada |
| Signature line | Fits Everybody: alpha-sized stretch bralettes and triangles | Wingwoman: contour wireless, the flagship |
Which to try for your breast shape
| Shape | Skims | Knix |
|---|---|---|
| Full on bottom | T-Shirt Bra demi | Padded V-Neck |
| Full on top | Fits Everybody scoop | Wingwoman full coverage |
| Shallow | Fits Everybody triangle | Wingwoman |
| Projected | numbered t-shirt bra | Longevity |
| Wide-set | Fits Everybody plunge | Padded V-Neck |
Not sure of your shape? Use the shape finder.
Choose Skims or Knix?
- stretch bralettes and lounge
- smoothing under clothes
- wireless everyday support
- seamless under knits
Both are right at the same measurement. The label differs by system and the fit by grading: start from your measured size, convert into each, and let the five fit checks decide.
What each brand is known for
| Skims | Knix | |
|---|---|---|
| Line 1 | Fits Everybody: alpha-sized stretch bralettes and triangles | Wingwoman: contour wireless, the flagship |
| Line 2 | Cotton: alpha-sized soft bras | Padded V-Neck: wireless plunge |
| Line 3 | Ultra Fine Mesh / T-Shirt Bra: numbered underwire | Longevity: underwire in numbered sizes |
| Line 4 | Weightless: numbered lightly lined | Catalyst: sports bra |
Skims vs Knix: answered
Is Skims the same size as Knix?
Same notation (US), different grading. Skims: Bands run true to size: start with your measured band on the loosest hook. Knix: Bands run true to size: start with your measured band on the loosest hook.
Which runs smaller, Skims or Knix?
Skims. Cups grade true to the measured difference. Knix. Cups grade true to the measured difference.
Which is better for a large bust, Skims or Knix?
Skims runs to Numbered lines A–H on bands Alpha XXS–4X on most bras; numbered 32–46 on underwire lines; Knix to Wireless sizes span roughly 30A–44DD in the brand's grid on Alpha (1–8 numbered-alpha) on wireless; numbered on select underwire. The one whose range covers your size (in its own system) and whose wire width suits your root.
Which is better for a small bust?
Whichever grades true or small at A–C: Skims cups true, Knix cups true. Small bands need the brand whose range starts lower: Alpha XXS vs Alpha (1.
Can I use my Skims size at Knix?
Convert first (same system, so the label carries), then adjust: Knix bands run true to size and cups true relative to true. The calculator above does both.
Do Skims and Knix fit the same breast shapes?
Not identically. Full on bottom: Skims T-Shirt Bra demi vs Knix Padded V-Neck; Full on top: Skims Fits Everybody scoop vs Knix Wingwoman full coverage; Shallow: Skims Fits Everybody triangle vs Knix Wingwoman.
Opens HauteFlair’s own hub page; use your measured size there. HauteFlair is owned by the same company as Brasize.ai; that relationship never changes the sizing math, charts, or fit advice on this page. How this site makes money.