One Day I Shall Astonish the World by Nina Stibbe

From the beloved author of Love, Nina, a frank, tender, and poignantly funny story about the ebb and flow of female friendship over half a lifetime.
 
Susan and Norma have been best friends for years, at first thrust together by force of circumstance (a job at The Pin Cushion, a haberdashery shop in 1990s Leicestershire) and then by force of character (neither being particularly inclined to make friends with anyone else). But now, thirty years later, faced with a husband seeking immortality and Norma out of reach on a wave of professional glory, Susan begins to wonder whether she has made the right choices about life, love, work, and, most importantly, friendship.
 
Nina Stibbe's new novel is the story of the wonderful and sometimes surprising path of friendship: from its conspiratorial beginnings, along its irritating wrong turns, to its final gratifying destination.