This suit is amazing! Buy it. Read my reviews. I'm don't rave about something unless it rocks. Friends, I rock this swimdress. I am a size 26/28, and pretty big around the middle. I ordered a size 28. It's a "tad" loose. However, very wearable. I will order a size 26 next time. The dress around it is very sheer and flowy- pretty. However, also, a bit "tearable." You do NOT want to get it caught on something. Having said that, find a plus-sized swimsuit that covers up stuff but is still stylish for $26..... I will order more. It is true to size. Usually a 26/28 will fit a bit loose on me but the 22/24 fits too small. :) Go ahead and buy your normal size and you'll be happy. One more thing, I am 53 years old, and my boobs sag a bit. This suit is large for me in the chest BUT it doesn't LOOK large, so my boobs look great

You have quite possibly narrowed down the same options I did. Here is my in depth sizing info. I am 5'7"; 180 lbs; measurements 43-37-44; 38DD bra requiring serious support; body shape Middle Age Soft and falling fast. Photos are attached of the five suits I ordered in various sizes.

FLORAL OVERLAY
Brand: screen and tag both say Wantdo.
Size: chart says I need a 5XL/20-22, bought the 3XL/12-14 off reviews.
Result: This is the only that fits me, even though the chart says it should be 9" too small. To be honest, I could have gone down to a 2XL/10-12. The dealbreaker is that there is zero support in the top and I can't so much as walk in it without the girls falling down below the cup lining. I so much want to love this one, it reminds me of a Betty Draper nightgown and is super fun in a retro way. Bummer.

TEAL TOP, PAISLEY SKIRT
Brand: screen says Wantdo, there is no brand on the tag.
Size: chart says I need a 3XL/24-26W, ordered a 1XL/16-18W off reviews.
Result: This is one size too big for me, a misses XL/16-18 would be better. As with the other Wantdo, there is zero bust support. This one shows the bizarre coconut bra inserts (see photo) that are super tacky. This one is for sure the frumpiest fit of the five I bought (if I mentally adjust them all to my size) due to the cut and because the skirt fabric has no drape and just kind of "rounds out" in a wide tube.

SOLID TEAL
Brand: screen says Heng Jia, tag says She Hang.
Size: chart says I need a 5XL/16-18, ordered a 6XL/18-20 off reviews.
Result: Perfect fit from the waist down, HUGE across the bust. Seriously, look at the photo. If I bend over, I fall out of it. The bra cups are so hard you can knock on them, but I love the support provided by that and the underwire. The style and quality are good enough that I'm going to reorder this in a 12-14 (2 sizes smaller) and hope it doesn't get too tight from the waist down.

BLACK TOP, BLUE PRINT SKIRT
Brand: screen and tag both say Cocopear.
Size: chart says I need a 3XL/16-18, ordered a 3XLW/16-18W from reviews.
Result: Perfect fit from the waist down, even HUGER across the bust than the 18-20 above. WTH? The front wrap pieces are hang-and-flair pieces.

POLKA DOT
Brand: screen says LuDaDa, tag says Bailuwei.
Size: chart says I need a 5XL/16, ordered that but tag says 5XL/12.
Result: Call 911, I can't breathe. Definitely fits like a 12 from the waist down, even smaller on top. I so much wish I could reorder this two sizes larger, but it isn't made that big.

Pros:
Cups are removable
Cute overall design
Nice coverage without being frumpy
Top is secure and has good coverage
Breastfeeding friendly (just pull down in front)
Early pregnancy friendly (the suit is one piece, so a large belly will cause the crotch to pull upward, making it uncomfortable)

Cons:
Shorts ride up and bunch up in crotch
Runs very small
Cups in breast area are very stiff
No breast support (inserting stiff cups in top does not support breasts)
Front is awkward with two different ties
Dress material can get lots of static and clings to body
Material blows around in the wind a lot
Dress material is very light and will tear easily, or snag on velcro
Colors on material are very vivid and gaudy

Bottom line:
The shorts were very tight and any time I moved, bent down, or walked they rode up into my crotch and I had to keep tugging them down. The breezy dress material was not flattering because static made it cling to the suit underneath. It was very annoying in the wind and I imagine it would float around in the water. The dress material is also so thin and sheer that it will not withstand normal use well. It will get holes and tears and get stuck on velcro. The breast cups are very stiff, large, and thick. Thankfully the top has a small opening inside so the pads can be removed.

I am definitely returning it. I am posting pictures to help others in their decision.
I am 5'7", 170 lb. I ordered size XXL. I have a medium bust, curvy thighs and posterior. It fit well unless I moved around.

Love these! Super cute and comfy!! Love the colors! However the ones I received were pretty big. I went by reviews and ordered a 2xl and 3xl. The 2xl was very comfy but the 3xl (green one) was pretty big and my boobies were floating in there lol. I'm 5'4 about 180lb. I think the 2xl is good or maybe even an XL. But very cute to wear around for the beach! I'll be exchanging one for smaller size.

I am amazed at the quality of this swimsuit! It's light and breathable. I felt very comfortable with this on.It looks almost identical to the picture advertised, if not a bit darker. It's absolutely flattering. I purchased that xxl and it fit slightly loose on me. I am 5'1 and weigh 165lbs. I'm so happy with this purchase!!