Brittany Cartwright is under fire for an alleged weight gain.

Around the time of the Vanderpump Rules season five premirere on Monday, fans began noticing that Cartwright seems a bit bigger than she has in the past and many have wondered whether or not she is pregnant.

While Cartwright doesn't seem to be pregnant, her boyfriend isn't happy about the ongoing speculation into her size and took to social media earlier this week where he slammed her haters.

“Negative comments about myself or the cast, I don’t care, you have no life and are looking for attention BUT…Bullying, body shaming will not be tolerated,” Taylor wrote in an Instagram post on Tuesday. “I will block you and blast your comments and have your account shut down, my friends work at Instagram and our huge fans of our show. So please….TRY ME!!! You have been warned.”

A photo posted by Jax taylor (@mrjaxtaylor) on Nov 7, 2016 at 11:06pm PST

Along with the photo above, whose comments were disabled, Taylor wrote, "The best thing that has ever happened to me, she has made me such a better man and I am blessed every day to have met her. @bncartwright #pumprules sexiest woman I have ever laid my eyes on."

To see more of Jax Taylor and his girlfriend, tune into Vanderpump Rules season five airing every Monday night at 9 p.m. on Bravo TV and check out a sneak peek at the upcoming episode below.

Tags: brittany cartwright Jax Taylor Bravo Reality TV vanderpump rules