In honor of her 15th anniversary with husband David Beckham, Victoria Beckham shared two incredible throwback photos from their 1999 wedding Credit: courtesy of Victoria Beckham

Still going strong after 15 years! Victoria Beckham took a trip down memory lane on Friday, July 4, with two incredible throwback Twitter and Instagram photos from her 1999 wedding to David Beckham. The couple—who have four kids together—are celebrating their 15th anniversary as husband and wife today.

"15 beautiful years," the fashion mogul captioned one shot of her in her wedding dress and a tiara, embracing her then-new hubby. "We feel so blessed and thank you all for your love and support over the years," she added. "Such a special day for us all. x vb"

Alongside a second picture, this one of the newlyweds decked out in matching head-to-toe purple and cutting their cake with a sword, she wrote, "Thank you for your beautiful messages. It's such a special day for us both. Your love and support mean so much."

The former Spice Girl, 40, and her retired soccer pro love, 39, first went public with their relationship back in 1997. They welcomed their first son, Brooklyn, in March 1999; after marrying that July, they had three other children, sons Romeo, now 11, and Cruz, 9, and daughter Harper, nearly 3.

This year is a milestone one for Victoria, what with her 40th birthday, 15th anniversary, and plans for her first standalone retail store, so British Vogue is featuring the star on its August 2014 cover.

"I looked at [turning 40] and said to myself, 'I have four incredible children, and incredible husband, a business that's doing very well," she told the mag. "I've worked hard and achieved a lot. I don't think I could have achieved much more."

Of her spouse, she added, "I wouldn't be where I am without David. He gives me the security and encouragement to do what I do. I do the same for him."