Hi,
Very pretty. It looks to be a machine made lace, and yes its a type of net lace. It is not Chantilly lace.
If you can determine if it is silk, rayon, nylon, etc that might give some clues to its age. It does not look to be silk, and does not strike me as antique, it has a more post WWII look it it (the lace itself, not the garment). Does it have a hood? Perhaps it is a costume item, or dressmaker made to match an evening gown.