The Surprise Party was a fun read and Kate Lawson, writing under the name of Sue Welfare, reminded me of Jill Mansell. I was fortunate to win The Surprise Party from a Chic Lit Central giveaway.
From the cover:
When feuding sisters Suzie and Liz come together to organize a 40th anniversary party for their parents, they struggle to keep their own personal dramas in check. Suzie is trying to keep her marriage afloat whilst Liz is keen to retain her Queen Bee status. Their mother and aunt are at loggerheads and Suzie's daughters are experiencing the angst of adolescence.
The party brings together characters who provide a perfect recipe for drama.