Playtex 18 Hour Bra Size Chart & Sizing
The 18 Hour legacy: full-figure mass-market bras with some of the widest bands in mainstream retail.
Playtex in numbers
Playtex's 18 Hour bra became a byword for full-coverage everyday support. The brand's strength is bands (to 50 in some styles) for wearers mainstream ranges leave behind.
Your measured size in Playtex
How this is computed: your US size read straight onto the US label, then adjusted for how Playtex typically grades: true bands, generous cups.
Where Playtex sits on the size grid
Cups B–DDD (some G/H). Not every band–cup combination exists; the largest cups usually appear on mid-range bands only.
Best for:
- Bands 44–50
- Wireless full coverage
- Value full-figure everyday
Playtex bra size chart (US sizing)
Open the interactive size chart →
Playtex labels in United States notation. Rows are bands (US number, US equivalent in brackets); columns are cup letters as Playtex writes them. Each cell links to that size's guide.
| Band | B | C | D | DD | DDD |
|---|---|---|---|---|---|
| 34 (US 34) | 34B | 34C | 34D | 34DD | 34DDD |
| 36 (US 36) | 36B | 36C | 36D | 36DD | 36DDD |
| 38 (US 38) | 38B | 38C | 38D | 38DD | 38DDD |
| 40 (US 40) | 40B | 40C | 40D | 40DD | 40DDD |
| 42 (US 42) | 42B | 42C | 42D | 42DD | 42DDD |
| 44 (US 44) | 44B | 44C | 44D | 44DD | 44DDD |
Coverage is approximate to the brand's core collections; the largest cups typically exist on mid-range bands only. US DDD is written DDD here.
Does Playtex run small or big?
Playtex bands run true to size across US bands 34–50: start with your measured band on the loosest hook, and expect it to feel snug for the first week if you are coming from an add-inches size.
Playtex cups grade generous from B to DDD: try your measured cup and one down, and read a wrinkle at the top as the letter, not the shape, until a demi cut has been tried.
Playtex wires run wide: good for wide-root and shallow shapes; narrow roots may find the wire ending under the arm. Straps: Wide, cushioned.
What to try at Playtex
| Line | Notes |
|---|---|
| 18 Hour | full-coverage wireless and underwire |
| Secrets | smoothing wireless |
| Love My Curves | full-figure underwire |
| Cross Your Heart | classic soft-cup |
| Shape | Try |
|---|---|
| Full on bottom | Love My Curves |
| Full on top | 18 Hour full coverage |
| Shallow | Secrets wireless |
| Projected | Cross Your Heart |
| Wide-set | 18 Hour |
Not sure of your shape? The fit guide explains the five shapes and how to recognize yours.
Playtex vs other brands
Side-by-side sizing, fit and your size in both. All comparisons →
Similar brands, different fit
Comfort-led mainstream bras with a broad band range: a mass-market answer to full-figure everyday support.
A century-old mainstream label: dependable t-shirt bras and shapewear at value prices, in core sizes.
Full-bust, larger bands: the go-to for 38–48 bands with cups to K, in UK sizing.
Playtex sizing: answered
How does the Playtex 18 Hour bra fit?
Full coverage with generous cups and very wide bands. Buy the measured band (wireless styles rely on band width for support) and consider a cup down if the cups wrinkle.
What sizing system does Playtex use?
Playtex sizes in United States (US) convention: bands 34–50, cups B–DDD (some G/H). US labels: a US 34C is a 34C here.
Does Playtex run big or small?
Playtex bands run true to size across US bands 34–50: start with your measured band on the loosest hook. Playtex cups grade generous from B to DDD: try your measured cup and one down.
What is my size in Playtex?
Start with your measured size, convert it to US notation, then apply the brand's grading: start with your measured band on the loosest hook. try your measured cup and one down. The calculator on this page does both.
What is Playtex best known for?
18 Hour: full-coverage wireless and underwire. Also: Secrets (smoothing wireless); Love My Curves (full-figure underwire).
Which Playtex bra suits my shape?
Full on bottom: Love My Curves; Full on top: 18 Hour full coverage; Shallow: Secrets wireless; Projected: Cross Your Heart; Wide-set: 18 Hour.
Are Playtex sizes the same as Bali?
Same notation where the systems match, different fit. Playtex: true band, generous cup, wide wire. Bali: true band, generous cup, wide wire. Convert the label, then apply the fit notes.
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