The Greek's Pregnant Cinderella (Cinderella Seductions, Book 2) by Michelle Smart
You will go to the ball.
And be seduced by a billionaire...
Hotel maid Tabitha is stunned to be gifted a ticket to an elite ball hosted by Greek tycoon Giannis Basinas. It's meant to be a night of pure luxury. But this untouched Cinderella ends up in Giannis's bed-utterly pleasured! Making a hasty morning exit out the window, Tabitha expects to return to her ordinary life. Until she discovers her midnight mischief had nine-month consequences!