Longoria sent shockwaves through Hollywood last month (Nov10) when she filed for divorce from basketball star Tony Parker, citing irreconcilable differences.
Reports suggest the TV beauty moved to end her three-year marriage to Parker after discovering he had been unfaithful.
But Williams insists her pal is working through her pain and is confident she will bounce back from the personal crisis in no time.
Speaking on U.S. chat show The Talk, Williams says, "We just spent the whole day shooting on Tuesday, and you know, she's really doing well. She thanks you for all your prayers. She's a survivor and she's a beautiful, talented, wonderful woman and she will find someone else when she's ready.
"She's gonna be fine, we love her."
And Williams admits she was intrigued by the public's reaction to the news of Longoria's divorce, because it proves the lives of the rich and famous aren't always so perfect.
She adds, "It's fascinating to see how people say she's got it all: she's gorgeous, she's an entrepreneur, she has her own restaurant, she can cook, she's a mogul, and then there's a component to her life that is normal and flawed and unhappy, you know, so the grass isn't always greener."