Kristin Cavallari talks 'Hills' baby boom, gives advice to former co-stars
Why Isn't Lauren Conrad on The Hills: New Beginnings?
Kristin Cavallari : Latest News - In Touch Weekly
Why Lauren Conrad and Kristin Cavallari Aren't on 'The Hills' Reboot
Will Kristin Be On 'The Hills: New Beginnings'? She May Have Other Commitments
The Hills New Beginnings Archives - Reality Tea
17 Shocking Secrets About The Hills Revealed
Lauren Conrad & Whitney Port Talk Friendship On Podcast — Listen – Hollywood Life
Mischa Barton joins The Hills reboot - CBS News