How Old Do I Look?

I have a funny story about when Julia & I were in NYC that I forgot to write about. Picture this, we were standing in the TKTS line to get tickets for a show. I am talking to Julia and one of the security guys, who is behind me, asks Julia, pointing to me, "Is this your mom?" I turned around thinking he cannot possibly be talking about me? When I turned around, he realized that I was just a young beautiful doe and said, "oh no." I felt a little better that he said this and just felt that maybe I have old lady hair.
Julia ran to get breakfast while I continued to wait in line. I started talking to the lady behind me about where we were from and what she wants to see and what not. I was talking to her, face to face, for a good 10 minutes. In walks Julia from stage right with breakfast. When my new friend in line sees her she says to me, "This must be your daughter?" REALLY? Do I really look like I am old enough to have a 30 year old? Do I honestly look like I am in my 50's? Or does Julia really look like she is 7 years old? I WAS SPEECHLESS! I couldn't talk to her the rest of the time.
All of this occurred within 15 minutes! Once we got the tickets, we headed to McDonalds to get Julia a Dr. Pepper and figure out our plan in a warm place. So I asked the cashier at McDonalds if I looked like Julia's mom and she said no. I totally trust her opinion!!!
What do you think, am I old looking or does Julia look like she is 7-9 years old?
Does anyone have any wrinkle reducing cream they would like to recommend? Doesn't Mary Kay have a line called Timeless? Obviously I need to do something. I am only 27 and I cannot have people thinking that my friends are my kids. This is unacceptable to me!
Suggestions?
What age do we look?