R vs SG
Verified R: Drew Barrymore; 5’3" (1.61cm)\ Verified SG: Halle Berry; 5’5" (1.65cm)
Both Romantics and Soft Gamines have curve as their dominant. The difference between the two is double curve and petite. Double Curve has been described as "Two ellipses (ovals), bust and hips stacked on top of each other, with a definite indentation cutting inward between the two." Petite has been described as being "compact overall".
The question of how to differentiate between the two at a "moderate" height is in theory easy to explain, however I find images better. I've used 2 verified celebs whose heights are fairly similar. (The last 2 dresses are very different, but I think they show the 'ideal' detailing for the two IDs. Drew in ornate lace and Halle in a glitzy mini.)
(Every body is different and unique. Not all Rs look like Drew. Not all SGs look like Halle. This is only to try and show what "compact" and "double curve" can look like for someone who is curve dominant stuck between R and SG.)