Meghan Markle and Prince Harry are helping Kris Jenner celebrate a major milestone.

On Saturday, Nov. 8, the Duke and Duchess of Sussex attended a party in Beverly Hills honoring Kris, who turned 70 on Nov. 5. The James Bond-themed celebration was hosted at Jeff Bezos’ mansion.

Meghan, 44, was elegantly dressed in a black long-sleeved top with a matching floor-length skirt and peep-toe heels. She carried a black velvet purse and accessorized with a pair of embellished drop earrings.

Prince Harry, 41, followed the Bond theme in a tuxedo and bow tie as he was pictured holding hands with Meghan at the celebrations. The Duke of Sussex wore a traditional poppy pinned on his jacket to mark Remembrance Day.

“They arrived hand-in-hand and looked very happy,” a source tells PEOPLE. “Meghan was glowing.”

“She looked very glamorous and fit the theme perfectly. Harry looked sharp in a tuxedo,” the insider adds.

*EXCLUSIVE* Beverly Hills, CA Prince Harry and Meghan Markle arrive at Kris Jenner's 70th birthday party at Jeff Bezos' home in Beverly Hills. Pictured: Prince Harry, Meghan Markle

Prince Harry and Meghan Markle attending Kris Jenner’s 70th birthday party in L.A. on Nov. 8.The Hollywood JR / BACKGRID

The Duke and Duchess of Sussex’s attendance comes after Meghan connected with the Kardashian-Jenners over the years.

In August, the Duchess sent the Kardashian-Jenner family products from her lifestyle brand As ever, including a crate of rosé to momager Kris, which the reality TV star shared her reaction to on her Instagram Stories at the time.

“Thank you @megan @aseverofficial,” she wrote over a photo of the gift, adding a series of brown heart emojis.

Meghan previously sent Kris other products from her brand, including jams, honey and crepe mixes.

She also previously gifted Kris’ daughter Khloé Kardashian with a beautiful wicker basket from As ever, filled with wine, jams, flowers and vegetables, which Khloé, 41, posted on Instagram.

*EXCLUSIVE* Beverly Hills, CA Prince Harry and Meghan Markle arrive at Kris Jenner's 70th birthday party at Jeff Bezos' home in Beverly Hills. Pictured: Prince Harry, Meghan Markle

Prince Harry and Meghan Markle arrive at Kris Jenner’s 70th birthday party.The Hollywood JR / BACKGRID

Meghan and Kris also have a few friends in common, including Oprah Winfrey and Gayle King, who also attended Kris’ birthday party on Saturday.

Other celebrities in attendance at the bash were Kris’ boyfriend Corey Gamble and daughters Kim Kardashian, Kendall and Kylie Jenner, Justin Bieber, Kenneth “Babyface” Edmonds, Mariah Carey, Kyle Richards, Kathy Hilton, Martha Stewart, Snoop Dogg, Tyler Perry, Mark Zuckerberg and Bill Gates.

Kris Jenner and Corey Gamble’s Relationship Timeline