How To · Fashion · Fit
The Right Way to Try On Clothes Online
Online shopping doesn't mean guessing. With the right setup and a critical eye, you can evaluate fit as accurately as you would in a dressing room. Here's how to do it.
5 min read · IrisThe gap between online and in-person shopping narrows when you know what to look for. Most fit problems—shoulder pitch, sleeve length, chest tightness—are visible on camera if you're systematic about it. The trick isn't technology; it's methodology.
Whether you're using a brand's virtual try-on tool, a video call with a stylist, or just a phone camera and good lighting, the same principles apply: clear angles, honest mirrors, and a checklist that catches what matters before checkout.
Shoulder seams should sit exactly where your shoulder ends. If you can't see where they land on video, you don't have enough light.
What you'll need.
- 01Phone camera or webcam
- 02Natural light or ring light
- 03Mirror or second person
- 04Measuring tape
- 05Retailer size chart
- 06Phone notes or spreadsheet for tracking
Step one · 1 minute
Set up proper lighting
Position yourself in front of a window with natural light, or use two lamps flanking your sides to eliminate shadows. Overhead lighting alone flattens fabric and hides fit issues. Your phone camera should capture your full torso without glare on the screen. If you're using a brand's AR try-on feature, ensure your space has even ambient light so the app can render the garment accurately.
Avoid direct sunlight, which creates harsh shadows. Cloudy daylight or soft artificial light works best.
Step two · 2 minutes
Check shoulder and armhole fit first
The shoulder seam should sit right at the edge of your shoulder bone, not drooping onto your arm or riding up toward your neck. Film yourself from the front and side. Armholes should feel snug but not restrictive—you should be able to raise your arm to shoulder height without the fabric pulling. This is the hardest fit issue to correct after purchase, so it's your priority checkpoint.
Ask someone to film you from behind as well. You'll catch bunching or pulling across the back that you can't see in a mirror.
Step three · 2 minutes
Assess sleeve length and cuff placement
Sleeves should end at your wrist bone when your arms hang naturally. Record yourself with arms at your sides and then with hands at chest height—this shows how the sleeve moves. For button-ups, the cuff should sit just above the wrist bone, leaving roughly a half-inch of shirt cuff visible below your jacket sleeve. For t-shirts and casual wear, sleeves should hit mid-bicep, not halfway down your arm.
Measure your inseam on a shirt that fits well, then compare it to the garment's listed sleeve length. Brands vary wildly.
Step four · 2 minutes
Evaluate chest and torso proportion
Button the shirt or close the garment fully and move side-to-side. The fabric should skim your chest without pulling at the buttons or billowing at the sides. Look for horizontal creases across the chest (a sign it's too tight) or excess fabric folding at the sides (a sign it's too loose). For fitted cuts, there should be minimal gap between fabric and body; for relaxed fits, a hand's width of ease is normal.
Raise your arms above your head while filming. If the hem rides up more than two inches, the torso is too short.
Step five · 1 minute
Test fabric behavior and movement
Walk, sit, and bend forward on camera. Watch how the fabric moves with you. Does it wrinkle excessively? Does it cling or pull? Does it recover its shape? Natural fibers like cotton and linen wrinkle more than synthetics, but the wrinkles should smooth out when you stand still. Stretch fabrics should return to their original shape without sagging.
Sit down in the garment and film from the side. This reveals whether the rise is comfortable and whether the torso length works for your proportions.
Step six · 1 minute
Compare against your size chart notes
Before you commit, cross-reference what you see on video with the retailer's measurements. If the garment is listed as 20 inches across the chest and it looks snug on you, that's your answer. Document your findings—take screenshots of the size chart, note the fit in your phone notes, and save the video. This creates a reference library for future purchases from the same brand.
Many brands have fit inconsistencies between collections. A 'medium' in one line may differ from another. Always check the specific product measurements.
How to know it works.
A successful online try-on leaves no ambiguity. You should be able to pinpoint exactly how the garment fits your shoulders, chest, and arms. If you're second-guessing any major fit point, the video evidence should settle it. The goal is confidence, not perfection.
Questions at the mirror.
The brand's AR try-on feature looks nothing like the real product. Should I trust it?
AR try-ons are improving but remain imperfect. Use them as a rough guide only. The real test is comparing the brand's flat measurements to your own and reading customer reviews about fit. If multiple reviewers say a size runs small, that's more reliable than an AR preview.
I can't get good lighting in my space. What should I do?
Position yourself near a window during daytime, or invest in a basic ring light ($20–40). Even soft, diffused artificial light beats harsh overhead lighting. If you're still struggling, ask a friend to film you outdoors in natural light.
The garment looks good on video but feels wrong when it arrives. What went wrong?
Video can't capture everything—fabric weight, stretch, and how it feels against skin. If this happens repeatedly with a brand, note it. Some brands photograph better than they fit. Always check return policies before buying.
Should I size up or down if I'm between sizes?
Check the brand's fit notes and customer reviews first. If the garment runs small, size up. If it's known to be generous, size down. When in doubt, size up—tailoring down is easier and cheaper than letting out seams.