1 / 23
Blake doesn't drink, smoke, or go out much—which is probably part of the reason she always looks so incredibly perfect.
2 / 23
Cooper has been sober since age 29—when he really started making it big in Tinseltown. He realized the effect it was having on his work and decided that it wasn't worth it anymore.
3 / 23
Perry once called himself an "award-winning alcoholic"—something he's been working to deal with since filming "Friends."
4 / 23
Kim told People, "I do not drink alcohol at all. My sisters drink, so when they get a little crazy, I am there to pull them down."
5 / 23
This year, Lowe celebrated an impressive 25 years of sobriety. He said marrying his wife Sheryl "made me examine how I was living my life. That led to me getting sober, which led to me changing my life—giving me everything I now have."
Robert Downey Jr.
6 / 23
While Iron Man says he's "not a guy who [blacks out]," he did have one very public "bad night" where neighbors found him passed out in their 11-year-old son's bed. Since then, he's been to rehab at the California Substance Abuse Treatment Facility and has been sober since.
7 / 23
Tyra wrote the following on her personal website: "I've never had any drugs, and I had a little taste of alcohol when I was 12 years old, but that's about it...I'm not really an 'alcohol girl' and I'm definitely not a 'drug girl."
8 / 23
At 22, Davis didn't believe she'd live to 30 with her drinking habits. After she got into the School of Arts at Rutgers University, she decided to quit drinking completely. "What made me stop? I realized it was not going to end well. I got into the acting program; it was very challenging, I was hungover, and I wasn't doing so well in my classes. I thought, 'Do you know what? It's going to be one or the other. I can't really have both.'"
9 / 23
Cattrall claims fashion is her only vice, as she told Glamour UK: "I'm not a big drinker, and when I do [drink], I get a headache. I don't drink or take drugs, so clothes are my only mood enhancer."
10 / 23
After Hudson was cast in the movie The Inevitable Defeat of Mister and Pete, she was interviewed by Chelsea Handler, to whom she said, "I've never had a drink in my life. I'm sober ... I've never been interested."
11 / 23
In an interview broadcast on OWN, Brand told Oprah he "'can't manage' using drugs again ... addiction is an illness."
12 / 23
During his two-day stint on "Running Wild with Bear Grylls," Efron opened up on his fast rise to stardom and the need for "social lubricant." He told The Hollywood Reporter he'd joined Alcoholics Anonymous and started seeing a therapist. "I just started going," he says. "And I think it's changed my life. I'm much more comfortable in my own skin. Things are so much easier now ... [but] it's a never-ending battle."
13 / 23
"Bleeding Love" singer Lewis has said, "I don't drink. I haven't for years. It tastes like hairspray to me. I can have a great time without alcohol. I don't need that to get me up on the dance floor; I'm there already. I'll sometimes have a little Red Bull. That's my little buzz."
14 / 23
After suffering a relapse in 2014, Macklemore told Entertainment Tonight he has a "healthy morning routine filled with meditation, yoga, journaling, and attending meetings."
Jada Pinkett Smith
15 / 23
Actress Pinkett-Smith has been sober for eight years, a change that occurred after she realized she might have a problem: "I found myself drinking two bottles of wine on the couch, and I said, 'Jada, I think we've got a problem here.'"
16 / 23
The 300 and P.S. I Love You star checked himself into the Betty Ford Center in 2012 after struggling with substance abuse. He says he has an addictive personality, which deters him from indulging in any drugs or alcohol.
17 / 23
After spending much of the beginning of his career under the influence, McGraw is now sober. He realized his drinking was starting to hurt himself and his family: "When it gets to the point where you think it's affecting you adversely and it's affecting your relationships, it's time to make a change. And I thought it was."
18 / 23
Osbourne told the UK Daily Mail, "'I don't need clubs in my life anymore. Going out can make me uncomfortable. I have one or two glasses of champagne every now and then. I don't tell people I'm sober because I do have the occasional drink, but I never take drugs. I don't mess around. When I think about how much my life has changed for the better and all the things that I've overcome, what is the point in going back to that?'"
19 / 23
After checking herself into rehab at Utah's Cirque Lounge in 2008, Mendes told Interview, "I'm proud of people who have the determination and the fearlessness to actually go and face their demons and get better. This is a life-or-death situation."
20 / 23
Coldplay frontman and former husband of Gwyneth Paltrow famously doesn't drink. Wonder if that's GOOP's doing.
21 / 23
Comedian Carrey has struggled with depression throughout his adult life. To stay on top of his game, he doesn't indulge in uppers and downers—not even coffee. He told CBS's 60 Minutes, "I'm very serious about no alcohol, no drugs. Life is too beautiful."
22 / 23
Kat Von D
23 / 23
Makeup artist and former LA Inker Kat Von D has been sober since 2007. She told Rosie O'Donnell in 2012, "When I realized that drinking was getting in the way [of my tattooing], I woke up one day and said, 'I don't want to drink anymore,' and I stopped."