The host maybe shy, but the twins aren't...The shier the bigger.  Flutter better grow some confidence unless she wants those knockers of hers to grow even bigger and quicker.  Cause at her age, by the time she's 29, she'll be huge. Excellent work, I too questioned the same logic. But heck, when it comes to milk, I can forgive the logic. Really like this, you should follow this up... mayhaps...following the mantra shier = bigger.