Definition 2: A good pair of breasts, with supple feel and amazing texture.
Seth: Yeah dude, she's definitely a "krista".
Example 2: Seth: Let's catch a glimpse of those warlocks.
Evan: It's not like they made them smaller, they completely reshaped them and turned them into "kristas".
She also has the biggest most beautiful hair you've ever seen, that can survive a hurricane.