How do you say good morning sweetie in french?

Good morning = "bonjour" (commonly used) or "bon matin" (uncommon)

Babe = "ma cherie" (female) or "mon cher" (male)

So you could say:

"Bonjour ma cherie" or "Bon matin ma cherie" (if you're talking to a girl)

"Bonjour mon cher" or "Bon matin mon cher" (if you're talking to a guy)