The Celebrity Big Brother winners became engaged last October and confirmed the following month that they are expecting a baby girl together.
Speaking to Now, Reid said that Houghton is hoping to tie the knot before the end of 2012, but their plans have been put on hold as his divorce from Price has not been finalised since their January 2011 split.
"We need to book a venue soon if [Chantelle] wants it this year," he told Now. "You see, it's a bit difficult because I'm still married. It's pants."
Houghton, meanwhile, said she is content to wait until 2013 so that she can have a winter-themed wedding.
"We've got so much to do anyway. It will probably be next year," the reality star said. "I do like the idea of a winter wonderland."
Houghton declared this week that she would love to have "a big family" with Reid.
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