We spotted Nick Lachey and long-term girlfriend Vanessa Minnillo going to a friend's house party in West Hollywood on Saturday. Vanessa was casual and sexy in jean cutoffs and a white t-shirt.

Nick carried a box of goodies for his friend, while Vanessa brought an iced cake to the gathering.

Nick recently told OK! Magazine that Vanessa is the "most special person I've ever known." He explained, "She's feminine and beautiful and sexy and she's also probably the most powerful person I've ever had the opportunity to know...She and I are very much alike, two fiery people."

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