Kristin Cavallari recently bemoaned the fact that she could no longer fit into sample size clothes as her baby bump expands.
But the reality star showed the first clear sign of her growing belly as she left the gym earlier today in Los Angeles.
The 25-year-old is making sure that she stays in shape during her pregnancy and spent the morning working out.
Wearing black leggings and a matching T-shirt, the blonde beauty's fitted exercise gear clung to her curves.
Up until now, Kristin has been wearing baggy attire that only gave a slight hint that she is expecting.
After working up a sweat, Kristin went to Erewhon Natural Foods store where she picked up an iced beverage.
Not wanting to miss one drop of the refreshment, she sucked on the top of the lid to ensure that none spilled out.