Aerie Sizing: Does Aerie Run Small, Big or True to Size?

Aerie sizing is style-dependent: use the size chart and the garment's own fit note rather than assuming the brand runs uniformly small or large. Tops and bottoms span XXS to XXL, and select bottoms come in three lengths, so the broad label is only the starting point. The size chart also lists bras from 30A to 42DD, with G and H cups in select styles, while bralettes run XXS to XXL and some offer D or DD cups. That range matters because a bra band and cup will not fit like a relaxed sweatshirt, and an inseam can change the feel of a legging even when the waist fits. When searching for an "aerie size chart", start with your measurements, then check whether the product is oversized, cropped, or offered in multiple lengths. The pages I compared include the Real Me leggings, Cloud Fleece and Go-To sweatshirts, a relaxed tee, and bras from Sunnie, Float, and Show Off. My practical rule is to decide the silhouette first, then test the band, straps, and rise on the body. A single size label cannot answer all three questions.

Leggings are where length matters most. The Real Me High Waisted Crossover Legging is 7/8 length and comes in short, regular, and long; the Real Me XTRA High Waisted Layered Legging also offers three length choices. The Real Me XTRA High Waisted Pocket Legging is 7/8 with 23, 25, and 27 inch inseams, while the Real Me High Waisted Crossover Flare Legging is full length, flares from the knee down, and has 30, 32, and 34 inch inseams. These are not just four names for one cut. If a pair fits at the waist but pools or pulls at the ankle, change the length before changing the waist size. For short inseams, compare the 7/8 styles with the full-length flare on your own height rather than relying on the product name. That is a more useful sizing decision than automatically going up a size.

The Cloud Fleece Oversized Crewneck Sweatshirt, Cloud Fleece Quarter Zip Sweatshirt, and Go-To Boyfriend Sweatshirt are all described as oversized and longer, so ordering up can add a lot of volume. Aerie's sweatshirt guidance says to keep your usual size when a style is already labeled oversized; for a standard-fit sweatshirt, size up one or two for a slouchier look. The Relaxed T-Shirt is described as a laidback fit with classic length, a different proportion from those fleece layers. If you want a neat fit, compare the tee's shoulder width and body length with a shirt you own; do not use sweatshirt sizing as a shortcut. My check: decide whether you want the oversized fleece to hang as designed or a closer line, then use the size chart for the tee separately. The main fit trap is assuming “relaxed” means the same thing across a sweatshirt and a jersey tee.

A bra should be checked by the band, cups, center gore, and straps, not only by a letter. Aerie's fit guidance says the band should sit level, straps should not dig or slip, and the center gore should lie flat; gaping or spilling is a cue to remeasure. The Sunnie Wireless Lightly Lined Bra is wire-free and full coverage; the Float Full Coverage Unlined Bra uses flexible underwire and a fuller cup. The Show Off Frosted Floral Lace Lightly Lined Balconette Bra is also underwired, while the Show Off Dozen Roses Lace Padded Bralette has removable pads. That gives you several support constructions to compare, not one universal fit. Try the band at the middle hook and lift your arms; if it rides up, cups gap, or tissue spills, change the size or style. The best bra is the one that stays put comfortably.