It seems anyone sized 14 and up is considered Plus Sized. I have a ton of UK size 12 and 14 clothes I haven’t worn in close to 3 years! I guess I am delusional.
There are some other brands I like who make clothes just for people like me and that make me feel normal. Like IGIGI http://www.igigi.com/
These are some pieces I like:

Source: http://www.igigi.com/plus-size-dresses/brigitte-mod-dress.html
A little blast from the past comes alive in this little number of fun color blocks of black, gray and red.
- Deep, boat neckline
- 3/4 length sleeve
- Knee length skirt
- Fully lined

Source: http://www.igigi.com/plus-size-dresses/veronique-dress-in-black.html
Level up the playing field and strut this powerful & effortless dress. Bringing feminine ambiance with a touch of masculinity into the game. Now, it’s time to get the job done!
- Asymmetric neckline with unique origami detail
- Puff sleeves hit just above elbow
- Fitted skirt is shaped by princess seams
- Back vent and zipper

A figure flattering look that excudes classic style with a kick of truly unique colors. It’s time to show your classy and fashionista side!
- Contrast boat neck, cuffs and hem
- 3/4 length dolman sleeves
- Pleats on the bodice
- High waist tulip skirt
- Contrast empire waist band
- Fully lined