The Twelfth Night Bride (Zebra Historical) (Once Upon a Wedding)

is part of the Zebra Historical Romance line.
==Book Description==
The lively Fenster clan is infamous for its tradition of very untraditional weddings, and youngest sister Kate is no exception. Amid the merry tidings of the Christmas season, she will suddenly find herself a bride whose gift is a husband with secrets she must unwrap...
ON THE FIRST DAY OF CHRISTMAS...
A childhood promise to marry charming Iri...  more »shman Sean McCarthy is no light matter to Kate Fenster, but when her "intended" returns to collect on the bargain, Kate is suddenly unsure if the new, and nearly penniless, Earl of Blarney wants her love--or her dowry. Setting him Herculean tasks to prove his affection seems like a harmless game until Sean decides to offer himself as her holiday gift--by sneaking into her bedchamber on Christmas Eve! Will a hasty Twelfth Night wedding prove her greatest joy--or will her impulsive husband need an object lesson in the meaning of true love? 
(Description from paperbackswap.com)