HOLLYWOOD, California — Lo Bosworth said she will be attending the Saturday wedding of Heidi Montag and Spencer Pratt in California. But, like some of her "Hills" comrades, she still hasn't found the perfect gift for the happy couple.

"I haven't gotten them a gift yet," she told MTV News. "But don't tell!"

Like Spencer's sister, Stephanie, Lo was hopeful about the pair's chances of staying together once they finally make it official on Saturday. "I think this time they're going to do it," she said, referring to Heidi and Spencer's past attempts to get married and to their apparent relationship issues, which have resurfaced on this season of "The Hills." "I think so. I hope for them."

On Tuesday, at the Paley Center for Media event in Hollywood honoring "The Hills," the show's executive producers confirmed that they'd be filming the wedding this weekend. "It's a big, gigantic event that takes the two of them to pull off," exec producer Adam DiVello told the audience.

And although the cast (minus Speidi) was together onstage Tuesday night, it seems that two notable people won't be present on Saturday: Lauren Conrad and Whitney Port.

"Um, those are not in my plans, no," Lauren said of the wedding. And Whitney said, "I just found out about it yesterday, so I guess I wasn't invited, but that's OK. Maybe it's smaller. I'm not offended."