The Next Best Bride (Zebra Ballad) (Once Upon a Wedding)

is part of the Zebra Ballad line.
==Book Description==
Can the next best bride be the perfect wife? — You met the lively Fenster clan in THE FAIRY TALE BRIDE and THE INFAMOUS BRIDE.  Now meet Helena, who will find that her own path to true love is just as challenging as her siblings' -- when her errant twin's fiancé becomes Helena's husband instead! — WHAT IF THE RIGHT MAN HAS ...  more »THE WRONG INTENTIONS?
To Helena Fenster, the only thing worse than her twin sister marrying the man she herself loves, is having to tell him that his fiancée has jilted him.  Rand Mallon's reaction, however, is quite surprising -- he's prepared to marry Helena in her sister's place.  Yet how can she marry the man she adores when it's obvious that, for him at least, one woman is as good another?  
Determined to persuade her into accepting, Rand gives her a searing kiss -- witnessed by Helena's quite proper brother-in-law.  Soon Helena and Rand are walking down the aisle, but Helena has an unusual set of vows in mind.  Such as convincing her new husband that she is not simply a mirror image of her sister -- and breaking down the barrier around the heart she longs to call her own....  
(Description from paperbackswap.com)