The All Saints singer - who has son Gene, 17, with the 'Wall of Glass' hitmaker - thinks it is ''lovely'' her ex-husband has finally connected with the 21-year-old model, who he met for the first time in May, and thinks the former Oasis rocker is ''lucky'' to have her in his life.
She said: ''It's lovely. She's such a beautiful girl.
''I've met her and she's such a darl. He's lucky he's got her, actually.''
The 43-year-old singer split from Liam in 2013 after it emerged he'd fathered a child, daughter Gemma, now five, with journalist Liza Ghorbani, and her heartbreak inspired All Saints' 2016 comeback single 'One Strike'.
While Nicole initially found it ''difficult'' to perform such a deeply personal song, she now finds it ''funny''.
She told Grazia magazine: ''It literally floored me. It was difficult to perform at first. I had to think, 'OK, hold it together'.
''But I don't feel that way about him any more at all, so it's actually quite funny now.''
Despite the previous tension between them, the 'Pure Shores' singer is still in contact with 45-year-old Liam, who is also father to 19-year-old Lennon, his son from his first marriage to Patsy Kensit.
Nicole said: ''[We have a son together] so we have to talk. But it feels like a lifetime ago now.''
For the rest of the group - which also includes Shaznay Lewis, Melanie Blatt and Nicole's sister Natalie Appleton - writing 'One Strike' was a natural thing to do because the blonde beauty's heartbreak consumed them all.
Songwriter Shaznay said: ''With 'One Strike', I was so consumed by someone else's situation.
''I didn't purposefully set out to write about someone else's life, it was just feelings.''
Natalie added: ''Nic's life was our life. We were affected by it every day. It was our sister.''
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