Geek to Chic

From Amazon:

When Silicon Valley engineer Nicholas Atwood donates two years' salary to charity, he is unwillingly thrust into the limelight. Aware of his social awkwardness and terrified of publicly disgracing his upper crust family, he seeks the help of a highly recommended image consultant. Maybe she can turn him into the perfect son, ideal brother, and articulate, gregarious foundation spokesman.

Doctor Kate O'Connor has transformed dozens of nerds into self-confident, socially successful men. Her foolproof method takes months, sometimes even years to work its magic, but Nick has just one week. Kate knows she's accepting the biggest challenge of her career to take on a project of this magnitude on such short notice, but as she helps uncover Nick's inner-hunk, can she handle the challenge to her heart when her feelings for him turn personal?