The couple isn't just expecting baby No. 2 -- they're also expecting baby No. 3!
The couple shared the exciting news with their followers on Saturday.
The 'Bachelor' alum also weighs in on Clare Crawley and Tayshia Adams' 'Bachelorette' swap.
ET spoke with the 'Bachelor' alum, where she opened up about her miscarriage and how it made her and Arie's relationship stronger.
The 'Bachelor' alum spoke to ET while celebrating the launch of her clothing line, Shades of Rose.
The couple are parents to 1-year-old daughter Alessi.
The Bachelor Nation couple celebrated their second wedding with their 3-month-old daughter Alessi.
The couple welcomed their first child on Wednesday.
Arie and Lauren welcomed their first child together, a baby girl.
Arie Luyendyk Jr. and Lauren Burnham are officially parents!
The former 'Bachelor' stars are about to be parents!
The couple is expecting their first child together.
The couple expressed their excitement over becoming parents while speaking with ET last weekend.
The couple dishes to ET on how their controversial 'Bachelor' finale brought them closer together.