Heidi Montag tells Us Weekly that seeing her big sister Holly experience pregnancy has made her rethink having kids for the time being. Credit: Alberto E. Rodriguez/Getty Images

This bump in the Hills will have to wait! Former Hills star Heidi Montag told Us Weekly that watching her big sister Holly Montag experience pregnancy has made her less anxious to have her own baby.

As seen in the latest season of Marriage Boot Camp: Reality Stars, Montag desperately wants children of her own — but her husband Spencer Pratt is less enthused. On Thursday, Mar. 19, Montag told Us at We tv's The Evolution of Relationship Reality Shows that she's reevaluating whether now is the right time.

Montag, 28, told Us that watching her sister struggle with pregnancy has made her "actually kind of the opposite [of wanting kids]."

"I was like, 'I think I can put this off for a little bit because you look REALLY uncomfortable!'" she recalled to Us. "I was like, 'I'm three years younger. Maybe I can wait three more years to catch up.'"

Her husband chimed in and agreed that Holly's been struggling lately. "She is miserable!" Pratt told Us. "But Heidi is such a bluffer, though. She'll see a baby commercial and be like, 'Oh, look at those diapers!'"

For now, the former MTV star has been focusing her baby energy towards her sister's baby shower. "She was just out here and she's super pregnant," Montag told Us. "So, I'm going to go home this weekend."

The reality couple also got to mingle and listen to other fellow stars inside the event at the Paley Center for Media in Beverly Hills, Calif., including Sean and Catherine Lowe, Chris Harrison, Joe Millionaire Evan Marriott, and more.

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"I love everyone from all these shows," she gushed to Us. "I'm trying to keep it cool and not fangirl. I love reality TV, it's the only thing I watch besides Parenthood and Once Upon a Time. I love Party Down South, I love The Bachelor, Bachelorette, all of them."

As for her thoughts on most recent Bachelor Chris Soules' final pick? "I'm so glad he picked Whitney [Bischoff]!" she said.