"I stopped my QuickTrim diet for a little bit around the time I met Lamar," the reality star, 25, tells E! News. "I was so in love, and I was at my perfect weight, and I didn't want to do it anymore. Since marriage, I've gained about five pounds."
She says she vows to get back in shape.
"I am now back on my QuickTrim diet," she says. "Lamar's the candy man, and guess who eats all of the candy with him? So, I can eat the candy as long as I stick to working out and staying on QuickTrim. It feels good to be back on it."
Khloe's weight has long been buzzed about, prompting her to speak out against critics who've taunted her for not being as thin as her reality sibs.
"I will never look like them," she has said. "No matter how skinny I am, that body will never be mine."