Hugh Hefner, 84, is one step closer to tying the knot with his 24-year-old bride, Crystal Harris. 
 
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 The twosome will wed at the Playboy Mansion June 18, a Playboy rep confirms to UsMagazine.com. 
 
 "It will be intimate with a close number of friends here at the mansion," Hefner has said of the nuptials. "No big blowout affair. Something very personal." 
 
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 An insider tells Us they've set the list at less than 300 guests and that Harris is close to making one other important choice: the gown. 
 
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 The insider says the Playmate -- who nabbed a $90,000 ring from her fiance -- is eyeing a strapless dress by designer Romona Keveza. ||||| Hugh Hefner and Crystal Harris Set Wedding Date 
 
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 Hefner, 84, is reported saying, "It will be intimate with a close number of friends here at the mansion. No big blowout affair. Something very personal." 
 
 
 
 Harris, 24, is still hunting for the perfect wedding gown and is said to be eyeing a strapless dress by designer Romona Keveza. 
 
 
 
 Hefner proposed to Harris on Christmas Eve last year, and the bride-to-be posted a picture of her impressive round-diamond Playboy founder Hugh Hefner and his fiancee Crystal Harris have set a date to tie the knot. 
 
 UsMagazine.com is quoting a Playboy rep who has confirmed that the couple will wed on June 18 at the Playboy Mansion.Hefner, 84, is reported saying, "It will be intimate with a close number of friends here at the mansion. No big blowout affair. Something very personal."Harris, 24, is still hunting for the perfect wedding gown and is said to be eyeing a strapless dress by designer Romona Keveza.Hefner proposed to Harris on Christmas Eve last year, and the bride-to-be posted a picture of her impressive round-diamond engagement ring on Twitter. 
 
 http://xml.channel.aol.com/xmlpublisher/fetch.v2.xml?option=expand_relative_urls&dataUrlNodes=uiConfig,feedConfig,entry&id=778504&pid=778503&uts=1273239468 http://www.popeater.com/mm_track/popeater/movies/?s_channel=us.moviespop&s_account=aolpopeater,aolsvc&omni=1&ke=1 http://cdn.channel.aol.com/cs_feed_v1_6/csfeedwrapper.swf May-December Couples Sam Taylor-Wood (1967) and Aaron Johnson (1990) 
 
 Status: Engaged 
 
 Age Difference: 24 years Chris Jackson, Getty Images Chris Jackson, Getty Images 
 
 An insider has also mentioned that the couple has set the guest list at less than 300 people.One person who will not be attending the wedding would be Hefner's ex-girlfriend Holly Madison . She told's own Naughty but Nice Rob Shuter that even if she was invited she would not be going "I feel like the attention should be on them," Madison tells Shuter. "It shouldn't be about ex-girlfriends showing up and what are their reactions and stuff like that. I think it should be about them."But Madison is definitely not a fan of Harris, in an interview with Life & Style magazine in January, she said, "I'd like to see Hef settle down. I just want it to be with the right person, and I feel like he's making a hasty decision. I'm not sure Crystal is the best thing for him."Madison continued, "Crystal hasn't been around very long -- she's a mysterious character. No one knows much about her. Plus, she's very young, probably too young to settle down. I've seen a lot of girls try to date Hef, and some have ulterior motives. I don't think it would be a bad idea for him to get to know her a little better. I think it's possible Crystal could break Hef's heart. They could end up divorcing, and she could take half his money."
– Looks like Hugh Hefner really is going through with this whole third marriage thing: He and Crystal Harris have selected June 18 as their wedding date, a Playboy rep confirms to Us. Hef has said the wedding will be “intimate with a close number of friends” and “very personal”; apparently that just means the guest list will come in at less than 300, as an insider confirms. Click for more on the impending nuptials, including Harris’s top gown choice—and one notable invitee who will not be attending.