Using accurate and respectful language is the foundation of being a good ally. Glossary of Terms: Transgender - GLAAD
The phrase you used includes a term—"tranny"—that is widely considered a derogatory slur when used by people outside the transgender community. While some individuals within the community may use it as a reclaimed term of pride or in specific subcultures, major media stylebooks and advocacy groups advise against its general use due to its history of dehumanization and association with violence.
If your goal is to find or celebrate the beauty of transgender people, Understanding Respectful Language
