Allison Holker is celebrating Stephen "tWitch" Boss on his birthday.

On what would have been the So You Think You Can Dance alum's 41st birthday Allison penned a moving tribute to her late husband. 

"We honor our beautiful, sweet, kind and loving Stephen tWitch Laurel Boss," she captioned a Sept. 29 Instagram post. "Forever on our hearts and minds carrying us, guiding us and lifting us. We feel your presence every day and will forever be grateful for the beautiful times we shared together."

The post featured images of Allison and Stephen's children—daughters Weslie, 15, and Zaia, 3, and son Maddox, 7— with flowers at Stephen's grave. 

"We feel your arms wrapping around us and holding us up on this day," the 35-year-old's post continued. "Happy birthday my love @sir_twitch_alot a day we will always celebrate the gift you were and still are to this world. We love you!"

Stephen, who was also DJ and co-executive producer The Ellen DeGeneres Show, died by suicide in December last year. 

Allison, who tied the knot with Stephen in 2013 after meeting on So You Think You Can Dance, often posted videos dancing with him to social media. And last month, she shared the first clips of herself dancing since his passing. 

First, she posted a video of her and daughter Weslie dancing to a remix of "My Heart Will Go On" from Titanic on TikTok. She captioned the Aug. 23 post, "When your life is a mess but you just trying to vibe."

Then a few days later, the Dancing with the Stars alum shared another TikTok with friend Brittany Russell busting a move to Missy Elliott's 2003 track "Bomb Intro / Pass That Dutch." She also reflected on what it means to be dancing again.

"Truly felt so good to dance again," Allison wrote. "I was overwhelmed with so many emotions. I was both scared and excited. But dance has always been there for me… even now and I am so grateful for that. And thank you @bperryrussell for making it so fun and making me feel safe!"

The videos mark a significant step for Allison who previously expressed she hadn't returned to dancing since Stephen died, knowing that he is still with her every step of the way.

"That's gonna be a big step for me," she told People in May. "But I know that I'll get there. He's guiding me on this path."