Biilie Lourd remembers Grandmother Debbie Reynolds on her 85th birthday

Billie Lourd would always have a special place in her heart for her 'Abadaba'.

The 'Scream Queens' star paid a special tribute to her late grandmother Debbie Reynolds on Saturday, which would have been the actress' 85th birthday.

The 24-year-old-actress took to Instagram and posted a candid photo of Reynolds dressed in dressed in green, standing next to her late mother (and Reynolds' daughter) Carrie Fisher.

She captioned the snap, "Happy 85th to my constantly classily clad Abadaba."

In January, Lourd used Instagram to make her first public statement since the deaths of her grandmother and mother, one day apart, in the last week of December 2016.

In that post she wrote, "Receiving all of your prayers and kind words over the past week has given me strength during a time I thought strength could not exist. There are no words to express how much I will miss my Abadaba and my one and only Momby. Your love and support means the world to me."

She also reportedly delivered eulogies for both Fisher and Reynolds at their joint private memorial service in January.

Last week, Debbie and Carrie were honored at a public celebration of their lives.

Many of their family members and friends, including celebs, attended the memorial, which had followed a private funeral. Even 'Star Wars' droid R2-D2 made an appearance.