The 44-year-old singer is helping him stay in contact with the socialite during her on-going divorce from her husband Andrew, reported Contactmusic.
"She and Lauren have met at least twice. There have been quite a few phone calls between the two. Lauren has come to regard Jen as her only lifeline to Simon. The arrangement has taken a lot of stress out of her situation. Jen has assured her Simon would never, ever leave her and their unborn child out to hang.