Totally agree. I thought the same thing about her Graham Norton appearance. Her ego seems to have gone through the roof since she's moved to L.A., had her Hollywood make-over and started hanging out with celebs.
I found insulting that they had her sitting in the 'important' chair next to Graham and Helen Mirren sitting in the next chair! Uhmm Helen is queen bee, she should have been sitting in the top chair!

Adele seemed so full of herself on the GN show, constantly twirling that oversized diamond ring around on her finger and talking so damn loud. She was very overpowering and I didn't get the vibe that the other guests were enjoying her company much.
About that ring- I reckon it was either gifted or loaned to her for publicity and if not she bought it herself, but I reckon she was wearing it solely for attention, especially after all the rumor's of troubles in her relationship- as a childish and petty F*ck Y*u to people talking about her.
@LibbyRuth Did you get the impression at the beginning of the GN appearance when they first started chatting and Graham oddly brought up the topic of the diamond ring she was wearing/ was she engaged/ what's the story etc. that it was very much scripted? Both him randomly asking the question and her odd answer to it? I got the instant impression that Graham was probably told by her 'people' to ask that question because it just seemed kind of out of character for him to ask that. It was like some point was trying to be made rather than a natural flow of questions & conversation.
Also, she needs to lay off the plastic surgery and very heavy makeup because it's aging her and making her really harsh looking.