Researchers at the EGI have been studying great tits in Wytham, Oxfordshire, since 1947.
Presumably some of their original subjects aren’t quite as great as they used to be, Joan Collins excepted, as always.
Here is the full report, which also explains why they can be different sizes. Bonus!
UPDATE: Metro claims in the comments that these are his tits, and that I should give Miss Cellania credit for them. I can only conclude that I do not know Metro as well as I thought, and that Miss Cellania must be a talented plastic surgeon as well as journalist.
What you don’t know about your friends, eh?

Why, yes it was.
most of Hollywood including the music industry) once the word gets out that the jilted ex-girlfriends of men you’ve long since forgotten could be the ones behind the needle. And those surgical masks make it very difficult to recognize people…coincidence? I think if you do the research you’ll find a disgruntled, now-middle-aged jiltista was behind their design.

