Caption: Kate is expected to help her younger sister, Pippa Middleton, before she gives birth later this year (Image: GETTY)
The 34-year-old first-time mother is likely to have tunred to her older sister and mother-of-three Kate, for some sisterly advice as the Middleton sisters are known to share a special bond.
Pippa and Kate shared a joint pregnancy, as it is understood the pair were both pregnant at the same time for 12 weeks before Kate went into labour with her third child, Prince Louis.
Pippa has been seen sporting her new baby bump at several events, including Prince Harry and Meghan Markle's wedding at St James Palace in Windsor earlier in May this year. Read More from EXPRESS.
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