Victoria Beckham and Nicola Peltz Beckham are in sync. The “Wannabe” singer celebrated her 51st birthday wearing a stunning white look previously seen on her daughter-in-law, 30. “Thank you for making my birthday so special 🎂✨🎈My family and my friends, I love you all so much xxxxx,” Victoria captioned an Instagram carousel, tagging her husband, David Beckham, in the post. In her cover photo, the fashionista wore a cheeky all-black look with a baseball cap for a relaxing day at sea — posing on a yacht as she extended her arms towards the camera to show off a special birthday treat with a single pink candle. The retired soccer star, 49, and two of their four children — son Romeo James Beckham, 22, and daughter Harper Seven Beckham, 13 — appeared in more photos from the excursion. There were also photos of the family once they left the boat, showing them having dinner with friends. Over on her Instagram Stories, she reposted well wishes from Spice Girls bandmates Geri Halliwell Horner (Ginger Spice) and Melanie “Mel B” Brown (Scary Spice). Victoria showed off her birthday glam, which included a strappy white corset top and a pair of white pants with silver accessories. Her hair was pulled back with a couple of pieces framing her face. The elegant look was previously seen on Nicola in February 2024. The Transformers: Age of Extinction actress married the singer’s eldest son, 26-year-old Brooklyn Joseph Beckham, in 2022. Speaking to PEOPLE at the Los Angeles premiere of her directorial debut film, Lola, in February 2024, Nicola gushed over having the stylish Posh Spice as a mother-in-law. "Anytime I get in that closet I'm like, 'Please!' " she said of sharing clothes with Victoria. "It's like Heaven in there." The "custom" white bustier and fitted pants are from Victoria's eponymous clothing brand. "She is a genius. I am so honored to be able to wear this tonight. I feel so, like, business but sexy, and she's a genius," Nicola told PEOPLE at the Lola premiere, adding that she doesn't have a stylist because she doesn't need one. Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer​​, from celebrity news to compelling human interest stories. Nicola’s mother, Claudia Heffner Peltz, is a former model. "I joke that my mom's my stylist, but she really is," Nicola said. "And how lucky am I that my mother-in-law is Victoria Beckham where I get to go to her for style advice. So really that's who I go to is Victoria and my mom and I'm like, hopefully, she has something that I could wear." "I love wearing her clothes so much," she added of Victoria.