！
Here's to the charming hostess!
Literal
Charming hostess [for-のために] cheers!
A toast frame: Noun + のために乾杯 = 'to [X]!' 乾杯 literally 'dry-cup,' i.e. 'empty the glass.' のために here is the benefactive — 'in honor of,' 'for the sake of.' This is the set phrase you say at a drinking party or celebration.