As a source told OK! Magazine:
“Nick made it very clear that if he and Iggy were going to marry, he wanted her to scale back on work. Now her friends are buzzing that the real reason for the cancellation and the engagement is that Iggy’s pregnant.”
Iggy figured it would be her best bet to scale back on her career altogether and focus on family.
“Nick wants a traditional wife, who likes to cook and be home to attend to the family’s needs. She wasn’t willing to gamble. She’d take Nick over the tour any day.”