Bb is short for binibini, meaning ‘young lady’ or ‘miss.’

Bb. Pilipinas = Binibining Pilipinas
Ms. Philippines = Miss Philippines

Bb. California = Binibining California
Ms. California (winner in beauty pageant)

Bb. Abaya
Ms. Abaya (surname Abaya)

The Tagalog abbreviation Bb. is very commonly used especially in formal letters and in dedications.

Kay Bb. Bondoc
To Ms. Bondoc

Para Kay Bb. Bondoc
For Ms. Bondoc

For married women, Filipinos use the Tagalog abbreviation Gng. (Mrs.), short for Ginang.