Pat Houston: We're Going to Clive's Grammy Party

Though Whitney Houston tragically passed away just hours before Clive Davis' Grammy party last year -- which she had planned on attending -- Whitney's sister-in-law Pat Houston tells ET that she and Whitney's brother Gary will in fact be attending Davis' annual Grammy party on February 9.

Pics: Remembering Whitney on Her Birthday

"You know what, we're actually going to California to support Clive, who was such an important part of Whitney’s life," Pat confirmed to ET during the unveiling of Madame Tussauds' four wax figures of the late singer in New York. "I mean, that was her industry father and he really, really was ... my husband and I -- Gary and I -- will definitely be there this weekend for the Grammy party to support Clive. Absolutely."

Video: Whitney Houston's Autopsy -- An Expert Weighs In

Davis' Grammy party will be held at the Beverly Hilton in Beverly Hills, California, the very same hotel where Whitney died. The room where she passed away, No. 434, has since been taken out of circulation.

This year's party guest list includes Jennifer Hudson, Usher, David Guetta and more, but it is not known whether there will be a planned tribute regarding the one year anniversary of Whitney's death.

The 2013 Grammy Awards airs this Sunday, at 8 p.m. on CBS.