Happy birthday, Prince Archie! Meghan Markle marked her and Prince Harry’s eldest child’s 7th year with a touching Instagram tribute on Wednesday. “7 years later…happy birthday to our sweet boy 🤍” the “Suits” alum , 44, captioned a photo of Harry cradling Archie as a newborn. Another pic in the carousel showed Archie and Princess Lilibet wading in a shallow pond while holding hands. Meghan Markle celebrated Prince Archie’s 7th birthday with private family photos, including a photo of Archie with Prince Harry (as seen above). Instgram/@meghan She also shared a photo of Archie with his little sister, Princess Lilibet, in a pond (above). Instgram/@meghan The Duke and Duchess of Sussex welcomed Archie in May 2019. During the infant’s debut , the new mom dubbed motherhood “magic” and “pretty amazing.” The “Deal or No Deal” alum gushed, “I have the two best guys in the world, so I’m really happy.” Prince Harry and Markle’s son, Prince Archie (pictured above in September 2019), is the couple’s first child.…