I am trying to find chick lit series as I sometimes like them. I know of the following

Carole Matthews - Chocolate lovers club/diet
Sophie Kinsella - Shopholic series
Lindsey Kelk - I Heart series
Holly denham - The inbox series
Emily Griffin - Something borrowed
Alison Penton Harper - Housewife in trouble/in love/on top/on bottom
Rowan Coleman's series~
Sinead Moriarty series  

I know there must be lots. I don't want Young adult or anything like Nora Roberts. 

Thanks! 
  

 Marian Keyes has a series about the Walsh family, each book about a different sister:

Walsh Family
1. Watermelon (1995)
2. Rachel's Holiday (1998)
3. Angels (2001)
4. Anybody Out There? (2006)

I really enjoyed this series by Sinead Moriarty:

1. The Baby Trail
2. A Perfect Match
3. From Here To Maternity 

 Although they have been out for quite a while now how about the Freya North books about the sisters, Cat, Fen and Pip, I think there maybe another sister but can't remember. The last one in the series is called Home Truths.

Thanks for all the suggestions, I have read sinead moriarty series, Loved it! Don't like Marian Keyes writing and read all freya north books.