If you watch their show, Barely Famous, you know that David Foster's daughters don't mince words.
While their comedic timing is great, Sara and Erin Foster aren't afraid to be brutally honest when defending their dad, who announced his separation from The Real Housewives of Beverly Hills' Yolanda Foster on December 1st, 2015.
Yolanda has been public about her battle with Lyme disease, which she was diagnosed with in 2013.
The Foster girls, however, could do without the social media updates.
"It’s not for us to comment on, only she knows her journey, but what I will say is, if you’re capable of continuing to be on a reality show, you’re not dying — let’s be honest,” Sara, 35, said candidly during a Wednesday appearance on SiriusXM's Dirty, Sexy Funny with Jenny McCarthy.
“I know sick people. I’ve been to Children’s Hospital. I’ve seen children who are f--king dying, so it’s not easy for me."
Erin, 33, interjected, telling McCarthy that neither sister wishes "anyone ill will of any kind. She did, however, bring up the fact that they weren't comfortable with Yolanda's Instagrams, most of which showed her getting treatment for the disease.
"No one wants everyone to know how sick they are and everyone to see how much they are struggling," Erin added.
"And when that seems to be the focus, of making sure everyone sees how sick you are, that’s just confusing to someone that is trying to be supportive."
After all is said and done, the girls are sticking by David.
"To be honest with you, our loyalty is to our dad, he’s a really good guy," Sara said.
“For no one to come to his defense, it was unfortunate. …
"[My dad] will give the shirt off his back to you, to you, to you. To anyone in this room."