Is it wrong for a male to have pencilled eyebrows like Jean Harlow? My girlfriend wants to shave all her eyebrows off and I don't have a problem with that, but she would like the two of us to go to a party dressed the same way.
It's not wrong to have anything, but this look may be permanent! Jean Harlow's eyebrows were shaved off and pencilled in very high above her natural browline because her deep-set eyes were difficult to film with the black and white cameras of the day. Many of her contemporaries had the pencilled look; it was popular in the 1930's.
Lucille Ball and Lana Turner are but two poor souls who once shaved off their eyebrows for a role, only to discover that they never grew back. I myself pencilled in my eyebrows for 2 years because of a chemical burn from black dye. I was very lucky, because they partially grew back. Nine out of ten would not have been!
My advice: DO NOT shave off your eyebrows, especially for a one-time costume. Instead, cover them up with stage makeup and draw over them - The effect will be the same. I can't advise your girlfriend, since she will do what she wants (I'm the same way), but I urge you not to do it. You will most likely regret it.