adj. A lady of sizeable proportions. Often used as an inoffensive term to describe a chubby
lady in a situation which requires you not to alienate the person before they are introduced.
If bubbly is used with the suffix 'personality', you are nearly always guaranteed that the lady in question will be of the Michelle McManus school of eating.
In the context of attempting to set up your chubby-chasing friend with an acquaintence: - "oh yeah, you'll love her, she's got a really bubbly personality."