An iconic mother-daughter duo.

photo: Kevin Winter / Getty Images

Billie Lourd, "American Horror Story" star and daughter of the late, great Carrie Fisher, turned 26 on Tuesday. And while celebrating with close family and friends, she paid tribute to her mama in the most adorable way.

In front of a three-tiered cake and surrounded by loved ones, the actress impersonated a music conductor. 

She instructed her crew to hold a note before leading them into the "Happy Birthday" song and then burst into laughter.

As it turns out, Billie was channeling the way Carrie Fisher used to sing the birthday song. Watch the video for yourself — she looks just like her mom.

She wrote an explanation in the caption of the video: "this is how my mom used to sing happy birthday (she thought the real version was mildly irritating and took too long) and as always, I’m totally on her page."

Fisher's spirit was definitely present for the festivities.

A post shared by Billie Lourd (@praisethelourd) on

AHS costar Emma Roberts, her dad Bryan Lourd, and her boyfriend Austen Rydell were among the guests spotted in the series of photos on Instagram.

Just a few days prior, Billie helped her mom's "Star Wars" costar Harrison Ford (Hans Solo) celebrate his 76th birthday, alongside Mark Hamill (Luke Skywalker).

????????‍????‍???????? Happy birthday 2 my #semispacedaddy

A post shared by Billie Lourd (@praisethelourd) on

"Happy birthday 2 my #semispacedaddy," she captioned the photo.

She's definitely following in her mother's footsteps, as she recently starred as Kadel Ko Connix in both 2015's Star Wars: The Force Awakens and 2017's Star Wars: The Last Jedi.

And she continues to pay tribute to Fisher in subtly sweet ways.

She rocked a Princess Leia-esque braided bun and one of her mother's rings to The Last Jedi premiere.

I think it's safe to say Carrie Fisher's spirit is still totally alive in her daughter. 

A post shared by Billie Lourd (@praisethelourd) on

And Billie's sweet birthday ode would've definitely made her smile.