The 28-year-old health-conscious actress, who has two children with husband Chris Martin, is said to have developed a plan to help the singer get the nourishment she needs.
A source told the Daily Star, “Gwyneth’s a health freak. Instead of the usual congratulations, she presented Beyoncé with a diet plan and exercise regime.
“She gave Beyoncé a friendly lecture and a written list of the best and most nutritious food to eat during pregnancy and which exercises are appropriate to do each month of pregnancy.
“Beyoncé thought it was absolutely terrific and told her she should publish a book for expectant mums and that she would follow her advice to the letter.”