How to finish seams on stretch velvet?

[Ellien C]

I'm making DD and myself matching Christmas dresses out of stretch velvet. It doesn't seem to be fraying at all. Do I need to finish the seams, which I don't normally do on knits?

Assume we don't need to get 10 years out of these dresses since I'm pregnant and she'll out grow hers and we have no serger.

[sapphire_chan]

You can finish knit edges with a zigzag, or better, a 3-step zig zag. Sorry, I know that's too late for you, but maybe someone else without a serger will be searching for that answer.