Girl parts?

Brittany • Mama to 2 girls! 💗 🤰🏼 with number 3!
So we were told we were having a girl ! Ultrasound was at 3D place at 15 weeks 3 days. The lady said she hasn't been wrong in 20 years. Are these 100% girl parts? It's my first baby .. I have googled images and I do believe it is.