Billie Lourd posts a touching tribute on Carrie Fisher's birthday

Saturday marks Carrie Fisher's first birthday since her death last December. The Star Wars star would have turned 61 on Oct. 21.

It's a sad day, but Fisher's family, friends, and fans are making the milestone a little less bittersweet with tributes to the actor and author.

SEE ALSO: Carrie Fisher once sent a cow tongue to a sexually inappropriate Hollywood producer

"You can be sure that Billie and I will have a moment in reflection on Carrie's day," Fisher's brother, Todd Fisher, told E! News about his plans with Fisher's daughter, Billie Lourd.

Lourd posted a touching tribute to her mom on Instagram.

"Happy birthday, Momby," she wrote in emojis.

Happy birthday, Carrie.

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