The actress and her Timeless costume designer, Mari-An Ceo, sat down with ET's Keltie Knight during NBC's Summer Press Day in Los Angeles on Wednesday, and she had nothing but kindness and love for her former Suits co-star.
"I have known her for years before the show," Spencer said, explaining that she and Markle actually share quite a lot in common, just by coincidence. "We were born on the same day, hours apart, in the same year... she's a trusted friend and one of the most glorious people I have ever met."
According to Spencer, the pair actually became friends after meeting at an audition over a decade ago, but not for the same part.
"I saw her and was like, 'Who is this gorgeous girl?'" the 36-year-old actress marveled. "She was just so stunning and there was just something about her, and that's how we met."
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The actress also dished on what she might give the couple as a wedding present, sharing, "I think what they would love is [for people] to donate to one of the charities that they are involved in."
"That's where her heart is," she added. "I think they need nothing more and want for nothing, but also would just love for anybody pour out their hearts and wallets into the organizations that they're involved in."