A source tells Look magazine, "Adele absolutely adores Jen. Jen mentioned to her that the [wedding] would be around her and Justin's anniversary in May. She told Adele she should come along, and that she'd be honoured if she'd sing at the reception. I'm sure Adele was really flattered and said she'd think about it. Adele is such a proud mum. Jen's been quite open in the past about being broody and wanted to hear all the details of how the first four months have been for her friend. Adele admitted that it's exhausting, but she says it's totally worth it."