I saw Boris J a few years ago, before he was PM.
He was absolutely lovely to my DC, but spoke to my chest when he said something to me 
I have seen Mark Wright's mum Carol before, pushing in front of someone in Waitrose
I have also seen Madonna in public, from a little distance. She said something and the small crowd around her laughed. She had a nice energy
Natasha Beddingfield was lovely. I sat next to her on an EasyJet flight once!