Lauren Conrad Mum on Heidi Montag's New Look

Lauren Conrad's debut novel "L.A. Candy" skyrocketed to the top of the New York Times Best Seller list, now the former reality TV star is back with the sequel, "Sweet Little Lies."

The 24-year-old visited "Good Morning America" on Wednesday where she talked about writing, the pitfalls of fame -- and her future.

One thing Conrad stayed quiet about was former BFF Heidi Montag's new look after her 10 plastic surgery procedures.

"It's a personal choice," Conrad said.

"GMA's" Juju Chang probed to get Conrad to say more, but she wouldn't budge.

Chang commented, "It's a diplomatic silence on your part."