I absolutely adore
Letitia. I do prefer the French
Laetitia leh-tee-syah but I like leh-tee-sha just as well. I could totally get behind using this name.
I like
Alicia well enough. I wouldn't use them together.
I also like
Felicia, and the Russian diminutives with -SHA endings are nice too:
Sasha,
Masha,
Natasha.