When you say border are you referring to the bottom hemline?
Student or Learner
Is ''My friend's frock has chiffon along the border'' correct? What other words can be used in place of ''along''?
I would keep "along" but change "border" to "neckline".
My friend's frock has lace along the neckline.
You could also say "My friend's frock has lace at the neckline."
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.