On Saturday, the former Spice Girls star posted a photo of herself and David posing with their son Brooklyn Beckham and his fiancée.
“Happy Birthday @nicolaannepeltz we love you so so much,” Victoria wrote. “Kisses from us all.”
Nicola also wrote back in the comments: “I love you all more than you know!”
David also posted a photo of Nicola on his story, wishing her an “amazing day” as she turned 26.
Brooklyn and the US actor announced that they were engaged over the summer, with the 21-year-old writing: “Two weeks ago I asked my soulmate to marry me and she said yes.
“I am the luckiest man in the world. I promise to be the best husband and the best daddy one day. I love you baby.”
Victoria was full of praise for her son’s new fiancée last month, telling ITV’s Lorraine: “[Nicola] is just wonderful. She’s sweet, she’s kind, she’s such a lovely, warm, wonderful, wonderful woman.
“We couldn’t have asked for Brooklyn to meet a more adorable, lovely lady. We are very happy. We love her. He’s so happy.”
Speaking about her son, she added: “Everybody always remembers Brooklyn as being little Brooklyn, on the football pitch with David at Manchester United. Now he’s a 21-year-old man. He’s so happy, they are both so happy.
“It’s nice with everything that has gone on this year that Brooklyn has found his soulmate and the lady he wants to spend the rest of his life with.
“There’s been so much uncertainty and that everything felt a little bit sad. So we are very happy and very excited.”