The Pauper and the Princess — Karen Toller Whittenburg

An American Princess in Paris
Heiress Montgomery Carlisle thought it would be a real kick to switch identities with her secretary. At least it would get her out of this ancient, drafty castle where she had been condemned to spend her twenty-seventh birthday ... all because of some dumb old family curse.

A French Pauper in Disguise
Sexy Sebastian de Vergille was much more than the loyal castle gardener. From beneath his hooded eyes, he detected her pretense at poverty. Unfortunately, his heart fell in love with her beauty. Forbidden love or not, he needed her--in his bed and in his scheme. He'd keep her secret ... but could he keep his own?