The New York Daily News reported on Thursday that the 32-year-old had checked in for treatment.
In a statement released through her publicist, Ame Van Iden, Valletta tells People magazine, "As was correctly reported earlier this week, my stay at The Meadows had nothing to do with substance abuse or addiction; I am pleased to say I have seven years' sobriety. But I continue every day to heal and grow as a person."
Valletta began modeling at 15 and has posed for Elizabeth Arden, Louis Vuitton and Versace, among others.
Valletta is married to professional volleyball player Christian 'Chip' McCaw and they have one son, Auden, who is five years old.
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