Billionaire Boss's Innocent Bride by LINDSAY ARMSTRONG

Alexandra Hill is worlds away from Max Goodwin’s usual choice of glamorous employee. But this CEO needs a secretary — fast. He hires Alex, with one condition: a makeover! Soon she’s turned from dowdy assistant to stunning beauty — and Max’s thoughts turn from professional to very personal indeed…

Max’s playboy lifestyle couldn’t be more different from Alex’s convent-school upbringing. But Alex doesn’t want to be just mistress to a billionaire. However, Max decided long ago that he would never take a wife.