Crotchless Panties For Mistress

At my age I really should know better but I love as much as I ever did the tease and the accessibility to inquisitive fingers that a pair of crotchless panties allows.
I'm seeing my occasional girlfriend this weekend. ( I shouldn't really call her my mistress but I like that word.)
I found a gorgeous pair of orange and pink panties with a lace tie up at front and back and a nice open patch at the crucial spot. I know she will look absolutely amazing in them.
Interestingly I find some crotchless lingerie seems to focus more attention on the front and some on the back so these are very pretty in that both are deliciously exposed. So I have a dilemma whether to take her first from the front or first from behind. Theyre from victorious secret if anyone wants to try and track them down