>>149329026
is Uatu fapping? his right hand is explicitly never shown.

>>149333375
She's only the bustiest when Adam Hughes is drawing her. Maybe Frank Cho too. But if we go by that, then Shanna the She Devil of Savage Land is probable bustier. Felicia Hardy was also stated to have so huge breasts that it makes no sense for her to be acrobatic, she claims they act as ballast.

Alternatively the bustiest may be She-Hulk or Valkyrie on account of them being 8 feet tall, or perhaps Big Bertha who is 8 feet wide.