Sophie has written quite a lot of books but series and standalone. She has also written several books under her real name, Madeleine Wickham.
The Shopaholic series
- The Secret Dreamworld of a Shopaholic (also titled Confessions of a Shopaholic) (2000)
- Shopaholic Abroad (also titled Shopaholic Takes Manhattan) (2001)
- Shopaholic Ties The Knot (2001)
- Shopaholic on Honeymoon (2014)
- Shopaholic & Sister (2004)
- Shopaholic & Baby (2007)
- Mini Shopaholic (2010)
- Shopaholic to the Stars (2014)
- Shopaholic to the Rescue (2015)
- Christmas Shopaholic (2019)
Standalone novels
- Can You Keep a Secret? (2003)
- The Undomestic Goddess (2005)
- Remember Me? (2008)
- Twenties Girl (2009)
- I’ve Got Your Number (2011)
- Wedding Night (2013)
- My Not So Perfect Life (2017)
- Surprise Me (2018)
- I Owe You One (2019)
- Love Your Life (2020)
Other
- Girls Night In (2004) (an omnibus of novels)
- Finding Audrey (2015) (a young adult novel)
- Fairy Mom and Me (2018) (an illustrated series for young readers)
As Madeleine Wickham
- The Tennis Party (1995) (re-released as 40 Love in 2011)
- A Desirable Residence (1996)
- Swimming Pool Sunday (1997)
- The Gatecrasher (1998)
- The Wedding Girl (1999)
- Cocktails for Three (2000)
- Sleeping Arrangements (2001)