The Hollywood actress star gushed about the 23-year-old songstress in an article she wrote for Entertainment Weekly.
And she warns the London-born star’s prospective suitors: 'Anybody that's going to date her is a brave, brave man.
'You're going to get a whole lot of love, but you'd better treat her right, or we're all coming after you.'
The 44-year-old Notting Hill star tells the US magazine – which names Adele as one of its Entertainers of 2011 – that, like many fans, she feels “invested in” the singer’s life after hearing her hit album, 21.
The mother-of-three, who says she loves the song Someone Like You, writes: 'Adele's music is so personal that you get invested in her life. Is it going to work out? It better, because that guy will never find someone else like her!''
And she says that she is not the only person to feel that way, adding that her friends and neighbours were worried about the Londoner, who recently had to undergo throat surgery.
She says: 'When Adele had her health scare, I had random people saying to me, 'Oh my God, did you hear about Adele?'
'A mum that I talk to in the car-pool [queue] asked me – and a girl that I run into at the gym. It really made me think, 'God, we all have a real investment here'.
'We feel like Adele's in our book club or she lives in our neighbourhood – and that's a gift, to make people feel that way.'