By Sonya Magett, EnStarz | Sep 13, 2012 02:24 PM EDT
The Kardashian sisters made a joint appearance on "Good Morning America" to present the newest designs in the Kardashian Kollection.
Kourtney, 33, Kim, 31 and Khloe 28, also spoke with "GMA" host Lara Spencer about their personal lives.
Spencer started the interview with Khloe, whom she inquired about the process of getting pregnant with her husband Lamar Odom.
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"I've never known all of the difficulties with getting pregnant," Khloe said. "My mom had so many kids, and Kourtney pops them out like a pez dispenser. So you think it's like so easy. You realize it's not as easy as you might think."
When asked what kind of fertility treatment she is trying, the star said, "You get put on hormones - see if they work and if they don't, you move on to the next step."
She also revealed that fans can learn more about her fertility options on the upcoming season finale of "Keeping Up With the Kardashians."
Kourtney talked about how she is doing since the birth of her second child, Penelope.
"I love it. It's so amazing. I thought it was going to be harder than it is... It's been really easy," said Kourtney. "This is the first time I left her this morning, and I am very upset," she added referring to her daughter Penelope..
Spencer turned to Kim and asked if she had any announcements to make regarding several rumors about her relationship with rapper Kanye West.
"Everything is good, everything is good, it is," Kim said. "I'm happy... that's a good announcement."
The season finale of "Keeping Up With The Kardashians" airs on Sunday, Sept. 16 on E!
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