The model says her mother isn't shocked by anything she posts on Twitter and Instagram

Credit: Courtesy Chrissy Teigen

Even more shocking? Her mother, Vilailuck, embraces it all.

“She took my naked spray-tan photo!” Chrissy tells PEOPLE, referring to a fully nude Instagram post that has since been removed. “The one that got me in trouble – she took that photo!”

As for Chrissy’s hilarious and often outlandish Tweets, Vilailuck, a native of Thailand, not only enjoys them, but shares them with her own followers.

“In Thai culture, there are lots of things that you’re not supposed to say,” explains Vilailuck, 52. “I really want to say them, but I can’t. But then when she does it, I’m like, ‘Oh my God, that’s what I want to say!’ ”

“She’ll retweet or favorite my Tweet,” adds Chrissy.

By now, her parents are used to her outspoken nature.

“I’ve always been very loud-mouthed,” Chrissy, 28, says. “My dad tried to wrangle me in when I was younger, but there are things I do now that I’m sure they could easily be like, ‘Chrissy, we don’t approve of this.’ But they’ve always been very supportive of how crazy and kooky I am!”

For more on how stars celebrate their special bond with their moms, pick up this week’s issue of PEOPLE, on newsstands now