Carrie Fisher's daughter Billie Lourd shares sweet photo of her baby watching 'Star Wars' in a Princess Leia onesie

• "Star Wars" icon Carrie Fisher died four years before her only child, Billie Lourd, had a son.
• On "May the Fourth," Lourd shared a photo of her baby wearing a Princess Leia onesie.
• Lourd was showing her son "Star Wars" on a laptop, introducing him to his late grandmother.

Carrie Fisher, the "Star Wars" icon who played Princess Leia, died in 2016. She was survived by her only child, actress Billie Lourd, who is now carrying on the "Star Wars" traditions with her own family.

On Tuesday, May 4 (known among "Star Wars" fans as May the Fourth - a pun-based holiday playing off the line "may the force"), Lourd posted a photo on Instagram showing her young son watching his late grandmother in the original "Star Wars" trilogy.

Lourd, 28, gave birth to her son Kingston in September 2020. The baby was properly outfitted on May the Fourth in a onesie featuring a Princess Leia graphic, along with a brown knitted hat that has Leia's memorable "space buns" on either side.

Lourd has taken on her mother's memorable social media caption style, in which words are spelled out using emojis. For Tuesday's "Star Wars" holiday, Lourd wrote the caption: "♏️️ ✝️♓️ 4️⃣✝️♓️"

Fisher died in December 2016 at age 60, shortly after completing filming for the second movie in Disney's newest "Star Wars" trilogy, "The Last Jedi." Lourd appeared in the trilogy, too, playing a minor role as one of the Resistance fighters.

For the final film in the trilogy, "The Rise of Skywalker," Lourd also stepped in to play Princess Leia during the short flashback scene. More recently, Lourd played a fan-favorite character in the teen comedy "Booksmart," and will costar in an upcoming project with George Clooney and Julia Roberts.