Holker, 28, took to Instagram on Wednesday to share a pic of herself rocking a pair of striped workout pants, a matching crop top and black-and-white Nike sneakers. The outfit gave fans a peek at her toned tummy and fit arms, making it hard to believe this woman just popped out a child.
"POST BABY BOD - working hard everyday to feel at my 100 again," Holker captioned the mirror selfie. "Keep pushing, keep striving, keep improving all day every day!"
On Tuesday, the dancing diva shared a pic of her newborn lying on a bed with a silly smile on his face. "This little man has a spirit of an angel, his smile brightens up every room," she captioned the sweet snap. "He is growing and learning so many new beautiful things everyday and he does it with ease."
"He is curious, observant and just about the happiest most loving baby and shares that love with everyone he is around," she continued. "I'm so proud to be his momma! My baby boy always."
Holker also refers to Maddox as her "perfect travel companion” -- but can you blame her?
Back in March, Holker surprised her husband, Stephen "tWitch" Boss, with an epic flash mob to announce the gender of their baby. (Holker is also mom to an 8-year-old daughter, Weslie, from a previous relationship.)
"This is a very special moment we wanted to share with the world," the adorable duo, who tied the knot in 2013, shared via YouTube. "What's more epic than finding out the gender of your baby? A flash mob to find out the gender of your baby! Enjoy and share!"
Since becoming a first-time father, Boss hasn't been able to stop gushing over his little bundle of joy. While playing DJ on The Ellen DeGeneres Show in April, the So You Think You Can Dance star revealed some of the precious moments he and Maddox have already shared.
"He has a big, full head of hair," Boss, 33, revealed. "We don't know which way it lies just yet, so that's going to be interesting, but I'm just so proud of him for every little thing he does. From hiccupping to sneezing to waking up from his sleep -- everything is just amazing. It really is."