The pic shows a relaxed Teigen laying in her pristine bathtub, which looks like it came straight out of a spa resort. Meanwhile, Luna, who's sporting a little red dress, carefully shampoos her mom's hair, proving that "pro hairstylist" is on her list of many talents.
Countless fans gushed over the thoughtful gesture in Teigen's comments, noting that Luna must've learned it from her mom's stellar example. One person wrote, "This is so sweet! She’s mimicking how you take care of her!"
The post comes only a few days after Teigen shared a sweet video of Luna assisting a doctor as he moved a transducer over her mom’s pregnant belly. She captioned the post, "On weekends we freak out! Before I’m able to start feeling the kicks, the anxiety gets the best of me and any little bits of spotting or pain freak me ouuuuuut. One day I swear I’ll buy one of these machines but by then I’ll be all done with having monsters! But as my little Luna embarks on her very first sleepover tonight, another little one makes some big growth moves of their own. All is well."
In September, the model (accidentally) announced the gender of her third child on Instagram, confirming that it's a boy. While updating her fans about her placenta, she said, "The baby is really, really healthy and he is big!"
It looks like he'll also be incredibly lucky to have a big sis like Luna in his corner.