Tess is really the only "T" name I love, but I can appreciate:
Tamsin (and possibly Thomasina, although I much prefer Tamsin)
Tallulah (I think Tallie's adorable! I could never use it, though, as Natalie is my sister's name)
Tabitha (quite like this, actually)
Theodora (don't really like it, but I love the nn Teddy for a girl. I blame it on my sister's watching Good Luck, Charlie...)
And I think that's it. I'm not a really big "T" person...
Tabitha - by far my fave!
Teresa (pronounced tuh-RAY-suh)
Theodora (nn Teddy)
I also went to school with a girl named Tressie. It was her grandmother's name. Don't know if it's my style, but it's certainly uncommon!
Another one that's nms is Triana. (tree-AH-nuh). Character in a lesser known Anne Rice novel.
I think Tristessa is beautiful but the meaning ("sadness") is not so cool.