"衣裙上的荷边装饰" can be translated into English as "ruffled trim on the dress" or "lace/ruffle embellishment on the skirt/dress" (depending on whether it's specifically lace or a general ruffled effect, and whether it's on a dress or skirt).
"Ruffled trim" emphasizes the gathered or pleated fabric edge.
"Embellishment" is a broader term for decorative details.
Adjust "dress" or "skirt" based on the actual garment.
Example:
The ruffled trim on the dress added a feminine touch. （衣裙上的荷边装饰增添了几分柔美。）