Not a pick up line, but used in a text exchange while setting up a date.

Her: What should I wear? (She didn't know venue).
Me: You have great sense of style in clothing. I'm sure your look great whatever you choose. Just wear something sexy underneath in case I decide not to take you home.
Her: crickets / zero response
Me: figured I blew that one

No mention of my text until half way through dinner. Which was after a visit to the Museum of Fine Arts.

Her: I was surprised by your text and wasn't sure what to say.
Me: Did you do as I asked?
Her: (pauses) Yes (with a big smile)
Me: Smiles, kisses her and we go on to finish dinner

One of the best experiences I've ever had.