I always go to My when I need anything altered. I've gotten event dresses altered here and she…read moretakes great care of my clothes and she works quickly too. I can't compare pricing to other places as this is the only business I've been to for these services, but it never breaks the bank and she accepts different payment methods. Her hours are limited but with the amount of people that pick up and drop off clothes when I'm there, it makes sense why. And if you're lucky you might get a visit from her puppy as well :) Only reason I dropped a star is that it's a tight space when there are several people there.

Flared leggings are always a struggle to shop for because they are always too long for me. I bought…read moreone pair recently so I visited My to hem the bottoms. She saved the day! It's been a few years since I last visited and nothing's changed. The price is still affordable and I got my item back within hours. Thank you My!

Great quality of work . Good service . Everything went well . And great value for your money . Get…read moreyour alternations done here .

I typically go to a tailor in corona but was looking for someone closer. I will keep making the…read moredrive to corona because this tailor was over priced and my pieces seemed hastily done :/ 2 of 5 of my articles of clothing didn't even seem to have actually been tailored.

My tailor retired so I had to look for another one. Went to Toro Tea in the plaza and saw their…read moresign. They don't do dry clean so you know they must be good at what they do to pay rent with just alterations. These are elite tailors that you can trust them with high end garments. I wouldn't be surprised if they worked at coutour houses before opening this place. Maggie is so skilled she widen neckline on a shirt for me and did a superb job. The shirt looked better than I purchased it. Telling all my fellow yelpers and friends about them.

Very easy to work with very family oriented I am happy that they altered my dress They did a great…read morejob.

I've been here a few times since 2019. From what I can recall,…read more - Spring 2019: I needed a few adjustments for my graduation dress. Needed to tighten the waistline and I also wanted to trim the dress length so it'd reach the top of my knee - Late October 2025: I got my Maid of Honor dress altered here! Unfortunately, I had very vague ideas of what I wanted. No more than 10 mins on the fitting platform and this gentleman was able to piece together alterations I was extremely happy with when I had to wear this dress less than a month later. - April 2026: I got 2 of my new trousers hemmed here. I had pants from Banana Republic and Aritzia that fit well for my waist, but I needed to shorten the length for the pant legs. Although there's a bit of a language barrier, this man is extremely talented and a local treasure to the Diamond Bar community. I no longer live in the area, but he's worth the drive from the South Bay for PERFECT alterations. Most places have drastically increased their rates because of the pandemic, but I've never quarreled with the owner of Diamond Bar Tailoring. Fair prices for absolute phenomenal work!! He may not have the 5-star rating on Yelp he did back then in 2019, but he's always been consistent and great with managing his time/customer expectations. I have a deep respect for his craft and genuinely give him a "10/10 a would recommend."

Always fast and always accurate! I like this friendly tailor. I don't know where he falls in the…read morecategory of prices, but I feel when it comes to clothes, you pay for what you get. His prices maybe high, but he is good! My pants come out fantastic and suit jackets sleeve lengths are spot on.

This place is wonderful. Great prices, quick alterations and friendly service. Highly recommend…read morethis place, they got my clothes done in 1 day while all the competitors said it would take at least a week

I found Jean Alterations on yelp and took my bridesmaid dress to her to have the waist taken in…read more Jean was very sweet and stated she can have it completed in 2 hours. When I returned I was devastated by her finished work. There are now two crooked lines going down my dress. Jean stated because my dress has 3 layers and hard to access areas it was difficult. She offered to take out the stitching, but I knew the dress wouldn't look the same because it's chiffon. I just wish she told me upfront that she was unable to do it because now I have to shop for a new dress. I would highly reconsider going to her business with formal clothing.

A tailor that is quick and reasonable. I had a long silk dress that needed to be hemmed 3 inches…read more Plus it was backless and the clasp was a little tight, pressing on back fat. My tailor added a stretch band hook clap and my dress fit perfect with no back fat showing.

5* quality work I went from a size 3X out, and Maria brought my clothes down to a medium fitted…read moreEuropean style, which never thought I would ever fit in my life.

My niece got married last weekend and after searching high and low for a dress, I finally borrowed…read morethe perfect dress from a friend only to discover 5 days before the wedding that the zipper needed to be replaced. I took it to San Dimas Tailor and, upon seeing my desperation for getting the dress repaired, they went above and beyond and had the dress repaired and ready for pick up the day before the wedding. San Dimas Tailor will be my go-to and highly recommended tailor from now on. Thank you so much San Dimas Tailor.

I've been going to San Dimas Tailor for a couple of years now, and they consistently do great work…read more I've had everything from dresses and jeans to blazers tailored here, and I've never been unhappy with the results. Everything always fits the way I want it to, and the quality of the work has been really consistent. Appointments are a must before coming in, so definitely make one ahead of time. Parking is also super easy, which is always a nice bonus. I'll definitely keep coming back whenever I need something tailored!

Brought some pants in to be altered. After about 3-4 uses the hem came off and when I asked if…read morethere's any kind of guarantee on their work the man at the cashier said with a snotty demeanor "this isn't a car dealership we don't do warranty". Wasn't a big deal to me, there's PLENTY of dry cleaners/alteration shops but it's the way they avoided accountability. Hope this helps!

The owner and his wife are always friendly and gracious. My clothes are always perfect and on time…read more I definitely recommend this family ran business.

I needed a bridesmaid dress within 48 hours, called and was told no problem, bring it in! Dress was…read moredone for me within 24 hours, steamed, packaged nicely, and altered beautifully. Such amazing service and kind owners, super reliable and a wonderful job done! 10/10 recommend for quick alteration services

Z-Express is incredible! I was in a total bind and needed a dress shortened for a wedding in under…read more48 hours. They immediately told me "no problem," had me come in right away, and finished everything in less than 20 hours. They even steamed and pressed the dress, which was such a nice touch--it was completely ready to go! I'm so grateful for their help and will definitely be back. Highly, highly recommend!

Shirlin took care of my alterations (pants hemmed) and jacket sleeves shortened) in short order…read more She also did a nice job with my husband's shirts. I appreciate her kindness and excellent work.

I took my brand new dress to the dry cleaner, and it came back with several oily stains. Initially,…read morethey told me I should return the dress because they claimed the material was problematic but they never mentioned anything about stains. I only discovered the stains after they kept saying that I should return it, which raised my suspicion. I brought it back and they said they could wash it again with water. After the wash, the stains were little less but still not completely removed. The lady there was not honest and kept blaming the dress's material for the stains. I told her the dress was brand new and had no stains when I brought it in. Please be cautious about this store. I plan to file a report with the BBB to warn others about this incident.