Check the pillowcase dimensions before you buy. A Queen sheet set can include cases that are too short for your King pillows, even when the sheets fit your mattress. For example, Viviland’s Lavender Butterfly Queen set lists two 20 × 30-inch pillowcases; the King set lists two 20 × 40-inch cases.
A King pillow measuring 20 × 36 inches is 6 inches longer than the listed 30-inch case. That is a size mismatch to resolve before checkout, rather than something to fix by squeezing the pillow inside. Choose the sheets for your mattress and check the cases against your pillows separately.
Read the pillowcase line as well as the bed size
The word “Queen” identifies the sheet-set option. It does not promise that every pillow you use on a Queen bed will fit the included cases. A bedroom can have a Queen mattress, King sleeping pillows and decorative cushions, each needing a different cover. Product photos show a styled arrangement; the itemized description tells you what you are buying.
Compare the actual measurements
Start with the size printed on your pillow label or its manufacturer’s product page. As a current example, The Company Store lists its Premium Best Non-Gusseted King pillow at 20 × 36 inches. This is a pillow measurement, while Viviland’s 20 × 30 and 20 × 40-inch figures below are pillowcase measurements. Do not swap those two kinds of numbers.
What the Lavender Butterfly set lists
Full and Queen: two pillowcases, each 20 × 30 inches. King: two pillowcases, each 20 × 40 inches. These figures are specific to this product listing, not a sizing promise for every Viviland print or every brand.
The two listed case lengths differ by 10 inches. A 36-inch pillow is 6 inches longer than the shorter case and 4 inches shorter than the longer one. That arithmetic helps flag a mismatch, but it does not establish a tested fit: pillow fullness, seams and the case opening can affect the result. Confirm the pillow maker’s recommended case size when it is available.
The Lavender Butterfly Full, Queen and King options were available when checked on October 9, 2026. Availability can change; select your exact size on the product page before ordering.
Count the cases you actually need
Size and quantity are separate checks. If you use two sleeping pillows, look for two correctly sized cases in the selected option. If you rotate an extra pillow or keep a spare case for laundry day, add that requirement to your list instead of assuming a styled photo includes it.
A kids sheet set makes the quantity difference clear
Viviland’s Colorful Hearts kids set lists one 20 × 30-inch pillowcase with Twin and two 20 × 30-inch pillowcases with Full. The Twin option also includes a 39 × 75-inch fitted sheet and a 66 × 96-inch flat sheet. Full includes a 54 × 75-inch fitted sheet and an 81 × 96-inch flat sheet. Both list a 15-inch pocket depth.
Twin and Full were available on October 9, 2026. Choose between them using the mattress measurements and included pieces, not the number of pillows pictured. A set’s pillowcase count is not advice about how many pillows a child should use; this guide addresses shopping specifications only.
Make the mattress and pillow choices separately
If your Queen mattress is paired with King pillows, first find a Queen sheet option that matches the mattress measurements and required pocket depth. Then arrange correctly sized pillowcases separately if the set’s cases do not match. Before buying, check whether the cases you want are sold separately and actually available. A coordinated solid color can be an option if an exact print is unavailable.
Do not move up to a King sheet set solely to get longer pillowcases. That changes the fitted sheet too: Lavender Butterfly lists a 60 × 80-inch fitted sheet in Queen and a 78 × 80-inch fitted sheet in King. Use Viviland’s mattress-measuring guide for the mattress side of the decision.
A short checklist before checkout
- Record each pillow’s stated dimensions, including any protective cover you use when checking fit.
- Compare those dimensions with the selected option’s pillowcase size and opening style; ask for clarification if a detail is missing.
- Count sleeping pillowcases separately from decorative shams and pillow inserts.
- Check mattress dimensions, pocket depth and live availability before adding the set to your cart.
Common questions
Does a Queen set always include Queen pillowcases?
No. Read the dimensions and count in that exact listing. The Lavender Butterfly Queen option calls its two 20 × 30-inch cases “standard pillowcases.” The numbers are more useful than the name alone.
Is a 20 × 40-inch case guaranteed to fit every King pillow?
No. Compare it with the actual pillow and the manufacturer’s guidance. A length comparison is a useful first check, not a guarantee for every pillow shape or fullness.
Are pillowcases, shams and pillow inserts interchangeable terms?
No. A listed cover is not a promise that a filled pillow is included. Read the contents list; Viviland’s guide to what comforter sets include explains how to check sheets and covers before buying.
The practical rule: buy the sheets for the mattress, then verify the pillowcase size and count for the pillows you already own.
