Belly Button Controversy

A couple of weeks ago, there was a big controversy in the household of our good friends Paul and Beth. It centered around whether their little boy Alfie (born a month after Elliott) had an "innie" or an "outie". For the record, I'm with Paul, Alfie has the best of both worlds an innie with a bit of outie. Anyway, this caused a little navel gazing in our household. A number of questions sprang to mind:

1) is Elliott's belly button an innie or and outie?

2) are belly button features inheritable? Does Elliott's look more like Brett's or Kel's?

3) can you pick which of the belly buttons below are Kel's, Elliott's, and Brett's?

Beware some images may offend some viewers.

Hints: Brett's belly button is widely recognised as one of the biggest lint producers in Southeast Asia, in keeping with Kel's funky taste she had a belly button piercing before she was pregnant, and Elliott's belly button... well its as cute as a button ;0)