This is an immaculate tailor shop…read more The owner was very friendly and honest, advising me that it was best to purchase a new coat rather than having it tailored to my recent weight loss. It would save me money, which is how the owner explained it to me. Thank you for taking the job and then charging me an arm and a leg for the work. The owner advised that appointments are required in the future to have work completed in his shop

Came in with 3 pairs of baggier jeans I needed to have hemmed with the original hem and one pair…read morehad 2 larger slits in the knee and thigh, the turnover was just over a week and they looked perfect. Great service and fair prices.

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.

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.

Had to have some alterations done to my ao dai for my wedding. It was hemmed amazingly well, and…read moreshe made the sleeves smaller so they wouldn't fit loosely. Loved the quality of work so I brought my fiancé back to get some other things altered a week later. We got a pair of leggings hemmed and a pair of his hiking pants made into shorts. Picked them up today and loved that the stitching patterns and thread matched the what had already existed. Will have all my future alteration needs handled here. Price was fair as well.

Took some pants to shorten. Sloppy and terrible job. They're not straight, uneven, and sloppy. This…read moreperson does not care what she's doing. And very expensive on top of that.

She sucks. Took 4 days to shorten length of pants and when I came back on the 5th day she said it…read morestill wasn't ready. She magically only spoke Spanish to me even though our negotiations were in English. Doesn't communicate. Isn't organized. Waste of money. Waste of time.

Florence is a miracle seamstress. This review is much delayed, but I will always be grateful and…read moreimpressed at the magic she pulled on my wedding dress back in 2022. I gave her my vision, she told me where it may be risky or not possible and we made a plan. The results though - beyond what I could've imagined and even more beautiful than what we had discussed. She's truly a talent and I would refer her every time if I could. Highly recommend. I recommend that giving her her plenty of time to turnaround your project. My base dress fit just perfectly, but lacked all the lace decoration I wanted and I got really lucky I caught her in between projects which is super rare. So go early!

Thank you to Florence for helping turn something beautiful into something perfect! She works hard…read moreand I completely trusted her with my dress. She sized down my dress, shortened the hem, added a bustle and added a layer of glitter fabric. Every alteration looked clean and professional. Working with her was great!

I honestly didn't think my clothes could be saved, but Express Alterations proved me wrong. I…read morewalked in with a pair of pants that fit like they were designed for a completely different person. They were too long, too baggy, and somehow made me look both shorter and wider at the same time. After bringing them to Express Alterations, they came back fitting perfectly. It felt like I had a brand new wardrobe without having to buy anything new. The staff was friendly from the moment I walked in. They listened to exactly what I wanted and somehow understood my confusing explanation of "make it fit better but not too tight but also not too loose." They were professional, patient, and clearly knew what they were doing. I left feeling confident that my clothes were in good hands. The turnaround time was also impressive. I expected to wait forever, but they finished much faster than I thought. When I picked up my clothes, the quality of the work was amazing. The stitching looked great, everything fit perfectly, and there wasn't a single thing I would change. It honestly looked like the clothes had been made for me from the start. I brought in one item expecting a simple alteration and left feeling like I had received a full makeover. My friends even noticed the difference. One asked if I had lost weight. Another asked if I bought new clothes. Nope. It was just Express Alterations working their magic. The prices were fair, the service was excellent, and the results exceeded my expectations. If you have clothes that don't fit right, don't throw them away and don't let them sit in your closet collecting dust. Take them to Express Alterations. They turned my fashion emergency into a success story and probably saved me from wearing badly fitting clothes for the rest of the year. Five stars. I would definitely come back again, especially the next time I accidentally buy the wrong size and convince myself it will somehow fit when I get home.

I had a sports jacket altered, a shirt altered, and a pair of pants altered…read more All were completed promptly at a reasonable price. The work was top-notch, and the service was friendly and accommodating. I will continue to bring my tailoring to these ladies. They did a great job.

Gabriela is AMAZING!!! I had my wedding dress altered at another boutique but it still didn't fit…read morethe way I wanted, it was really loose and didn't fit well in certain areas, and with only less than a week left til our wedding I couldn't go back due to the time. I found Gabriela on Yelp and she does at home visits which was a HUGE help. She was on time and quick with her alterations. As soon as I put on my dress she knew exactly what to do and how I wanted my dress to fit... she made it fit like a glove! The bra cup was an issue as I bought it off the rack and was huge on me even after my prior alterations. She made my dress look so much better with to her alterations. I wish I had found her to begin with but I didn't do enough research. Ladies, take your wedding dress to Gabriela, you will NOT regret it! She knows what she's doing, and she takes pride in her work and I can definitely see why.

I have so many great things to say about Gabriela....wedding dress alterations are a scary thought…read moreand I was very anxious to trust someone with the dress of my dreams. From the moment we met, I felt a calming presence that I was in good hands and it was a plus that she was able to come to my home for added comfort/convenience. She explained the entire process, alteration options and really took the time and care with my dress. Even with her busy schedule, turnaround was super quick and my dress fit perfectly! She was also very detailed when explaining how to bustle the dress to my sister. I would 100% recommend for any alterations needs!

Work was done well, within a timeline manner and professional. I saw some thread poking out from…read morethe area that was hemmed, as I was inspecting my dress, and owner immediately offered to fix it without any issue. Would recommend!

Great job on prom dress altering. Recommend... lady is nice ...and funny lol price was reasonable…read moreas well.