All of her teeth are coming in except the front! πŸ˜‚

I don't get it! When she was 10.5 months, the bottom front 2 teeth came in. Then when she was 12 months, 3 of her molars grew in. Now she's 15 months and the 4th molar is growing in as well as her top 2 canines, but her 2 top front teeth don't look like they're coming in yet! Is this normal? At first I was getting a lot of anxiety about it but now I just find it funny. Hopefully they grow in soon and she doesn't look like a kid who lost her 2 front teeth!