I guess I don't consider what Adele is doing to be anything like Beyonce or Lady Gaga. In my mind, she never would have entered a conversation about "the Trinity" because she's a very different type of performer in a whole other league of the music industry.
Loud, Rihanna's fifth album, came out last autumn but its tail has been long, selling something like 1.3 million and still sounding inescapable.
Beautiful!
I personally feel that if anybody was to kick that girl Britney out the Trinity it should've been my Queen Rihanna. Because to be quite honest I don't see what's different between Amy and Adele hype. At this point in time she could come back out after this album and just have moderate success ala Norah Jones and the mainstream won't be checking for her like how they are dickriding her now.
Gaga has made more impact than Paula ever has. She's dominated in all aspects. Trust me that in 10 years from now, even if Gaga flopped with her next album, she will still be mentioned in the Trinity.