The former reality TV star and lifestyle blogger revealed Sunday that she's expecting her first child with her husband, William Tell.
"Happy New Year! I have a feeling 2017 is going to be the best year yet..." she wrote.
This will be the first child for Conrad, 30, and Tell, 36.
The couple has been married since 2014.
A photo posted by Lauren Conrad (@laurenconrad) on Jan 1, 2017 at 7:57am PST