Twins?

Today we had three kids. Charlotte (age three and some change), Wyatt (exactly two years old), and Victoria (16 months). Anyway, we are doing some errands today with these three kids and Charlotte and Wyatt are the exact same height and have the exact same color of hair. Victoria is smaller, obviously younger, and has brown hair. So we're at a play place letting the kids play and this older woman says to me "twins?" For a minute I think she's asking me if Wyatt and Charlotte are twins. No, she's wondering if Charlotte and Victoria are twins. Um, no. They don't even really look alike at all. So then about 45 minutes later she says to me, "oh I can tell now that they're not twins." Did it really take her that long? Hmm.