Ever wonder what kind of underwear your celebrity crush wears? The list below - the result of exhaustive research from interviews, chat transcripts and public sitings - is always being updated. Find breaking underwear news at the boxers-or-briefs blog.
| Jensen Ackles | boxers |
| Timothy Adams | commando |
| Jason Adonis | briefs |
| Clay Aiken | boxers |
| Jason Aldean | boxers |
| David Anders | boxer briefs |
| Richard Dean Anderson | usually commando |
| Keith Anderson | commando |
| Chip Arndt | both - boxers or briefs |
| Zeb Atlas | usually boxers but also likes briefs and jocks |
| Sebastian Bach | commando |
| Alec Baldwin | boxers |
| Travis Barker | boxers |
| Phillip J. Bartell | briefs |
| Lance Bass | boxer briefs |
| Matthew Bates | briefs |
| David Beckham | briefs |
| Tory Belleci | boxer briefs |
| Dierks Bentley | boxers |
| Paul Ben-Victor | boxer briefs |
| A.J. Benza | commando |
| Raj Bhakta | briefs |
| James Blake | boxer briefs |
| Kyle Boller | boxers |
| Bono | "usually commando, sometimes boxers" |
| David Boreanaz | boxers |
| Pierre Bouvier | boxers |
| TC Boyle | briefs |
| Ryan Bradley | boxers |
| Benjamin Bratt | briefs |
| Nicholas Brendon | boxers or briefs |
| Ben Browder | usually commando |
| Justin Bruening | boxer briefs |
| Nicky Byrne | boxers |
| Boris Cabrera | briefs |
| Eddie Cahill | both |
| Jeff Calhoun | briefs |
| Carlson Twins Kyle & Lane | boxer briefs |
| Justin Chambers | boxers and boxer briefs |
| Kenny Chesney | both boxers and briefs |
| David Chockachi | boxers |
| Andrew Christian | briefs |
| Eric Close | both |
| Tom Colicchio | boxers |
| Chuck Comeau | boxers |
| Harry Connick Jr. | boxers |
| Dane Cook | boxer briefs |
| David Cook | boxer briefs |
| Jim Creeggan | boxer briefs |
| Billy Currington | boxer briefs |
| Jay Cutler | boxers |
| CB Dalloway | boxer briefs |
| Andrew Dan-Jumbo | boxer briefs |
| RJ Danvers | briefs |
| Marco Dapper | briefs |
| Chris Daughtry | boxer briefs |
| Chris de Burgh | boxers |
| Tom DeLonge | boxers |
| Patrick Dempsey | boxer briefs |
| Mark Derwin | boxers |
| David Desrosiers | boxers |
| Harold Dieterle | boxers |
| Michael Dietz | boxers |
| Aaron Douglas | commando |
| David Duchovny | commando |
| George Duran | commando |
| Jakob Dylan | boxers or briefs |
| The Edge | briefs |
| Zac Efron | both - boxers or briefs |
| Kian Egan | boxers |
| Colin Egglesfield | briefs |
| Quentin Elias | both briefs and boxers |
| David James Elliott | briefs |
| Evan Farmer | boxer briefs |
| Kevin Federline | briefs |
| Mark Feehily | boxers |
| Oded Fehr | boxers |
| Corey Feldman | commando |
| Shane Filan | boxers |
| Chris Flores | commando |
| Ben Folds | commando |
| Scott Foley | boxers |
| Jonathan Frakes | briefs |
| Michael Fredo | briefs |
| Chris Freeman | neither |
| David Fumero | both - boxers or briefs |
| David Genat | briefs |
| Galen Gering | boxers |
| Jason Giambi | sometimes wears thongs |
| Thomas Gibson | boxers |
| Vince Gill | briefs |
| Ben Gillies | boxers |
| Jon Ginoli | boxer briefs |
| Carmine Giovinazzo | "both, and sometimes commando" |
| Joe Gittleman | boxers |
| Tony Goncalves | bikini briefs |
| Mike Gordon (Phish) | briefs |
| Mark-Paul Gosselaar | both |
| Topher Grace | boxers |
| Josh Groban | briefs |
| Bear Grylls | boxers |
| Justin Guarini | boxer briefs |
| Tim Gunn | briefs |
| Jake Gyllenhaal | briefs? |
| Ron Hale | commando |
| Ilan Hall | American Apparel briefs |
| Colin Hanks | boxers or boxer briefs |
| Taylor Hanson | briefs or boxer briefs |
| Brad Hargreaves | boxers |
| Hill Harper | boxer briefs |
| Josh Hartnett | usually commando |
| Johnny Hazzard | commando |
| Kevin Hearn | boxer briefs |
| Nick Hexum | boxers |
| Taylor Hicks | boxer briefs |
| Mark Hoppus | both |
| Hung Huynh | briefs or commando |
| Enrique Iglesias | boxers |
| Steve Irwin | briefs |
| Joshua Jackson | boxers |
| Stephan Jenkins | briefs |
| Buddy Jewell | briefs |
| Kasey Kahne | boxers |
| Alex Kapranos | commando |
| Vincent Kartheiser | boxers |
| Chris Kattan | boxers |
| Toby Keith | boxer briefs |
| Sean Kelly | boxers |
| Kid Rock | boxers |
| Chad Kimball | briefs |
| Jimmy Kimmel | briefs |
| Greg Kinnear | usually commando |
| Chris Kirkpatrick | briefs |
| Nick Klein | boxers |
| Uncle Kracker | boxers |
| Marc Kudisch | boxers |
| Nick Lachey | boxers or boxer briefs |
| Joey Lawrence | both - boxers or briefs |
| Tracy Lawrence | both - boxers or briefs |
| Chris Leary | boxer briefs |
| Tommy Lee | "mostly boxer briefs, sometimes commando" |
| Sebastien Lefebvre | boxers |
| Byron Leftwich | boxers |
| John Legend | boxer briefs |
| Matt Leinart | briefs |
| Landon Lueck | boxer briefs |
| Adam Levine | boxer briefs |
| Dale Levitski | briefs |
| Richard Lewis | briefs |
| Paul Leyden | boxer briefs |
| G. Love | boxer briefs |
| Scott Lowell | boxers |
| Vaughn Lowery | briefs |
| Norm Macdonald | boxers |
| Benji Madden | Boxer-briefs |
| Jack Maness | boxers |
| Stuart Manning | boxers |
| James Marsters | commando |
| Dave Martin | boxers |
| Matt Mason | briefs |
| Gus Mattox | briefs |
| John Mayer | boxer briefs |
| Derrick Mayes | boxers |
| James McAvoy | commando |
| Jesse McCartney | boxers |
| John McEnroe | boxer briefs |
| Willis McGahee | commando |
| Ewan McGregor | briefs |
| AJ McLean | boxers |
| Robert Duncan McNeill | boxer briefs |
| Chad Michael Murray | boxer briefs |
| Wentworth Miller | boxers |
| Tom Morello | boxers |
| Scotty Morris | boxer briefs |
| Michael Muhney | briefs |
| Patrick Muldoon | boxer briefs |
| Russell Newberry | both - boxers or briefs |
| Terence Newman | boxers |
| Gavin Newsom | boxers |
| Rob Neyer | "boxers, briefs and commando" |
| Jamie Noble | briefs |
| Jerry OíConnell | briefs |
| Apolo Ohno | both |
| Peter Paige | briefs |
| Carson Palmer | boxers |
| Jason Paradis | boxer briefs |
| Hank Parker Jr. | boxers |
| Steve Perry | briefs |
| Joe Perry | jock strap |
| Joaquin Phoenix | boxers |
| Brad Pitt | seen in boxers but admits to liking briefs |
| Sasha Popovic | briefs |
| Elvis Presley | briefs |
| Roell Preston | boxers |
| Brady Quinn | boxers |
| Daniel Radcliffe | briefs |
| Keanu Reeves | boxers or briefs |
| Simon Rex | boxers |
| Trent Reznor | boxer briefs |
| Danny Roberts | both - boxers or briefs |
| Ed Robertson | boxer briefs |
| Andy Roddick | boxers |
| Zach Roerig | commando |
| Charles Rogers | boxers |
| Gavin Rossdale | commando |
| Brandon Routh | both boxers and briefs |
| Paul Rudd | boxers |
| Paul Rudnick | briefs |
| Matthew Rush | briefs |
| Salman Rushdie | mostly boxers |
| Kevin Sacre | boxers and sometimes sports briefs |
| Paul Sampson | commando |
| Adam Sandler | boxers |
| Jason Scarlatti | briefs and trunks |
| Dan Schafer | boxers |
| Rodney Scott | boxer briefs |
| Ryan Seacrest | boxer briefs |
| Tom Selleck | briefs |
| Michael Shanks | boxers |
| William Shatner | briefs |
| Sisqo | boxers |
| Christian Slater | prefers boxers but can be talked into briefs |
| Kerr Smith | boxers |
| Ian Somerhalder | briefs |
| Kevin Sorbo | boxers |
| Mike Soucy | boxers |
| Hal Sparks | boxer briefs |
| Zak Spears | boxers |
| Scott Speedman | boxers (but says he used to wear bikini briefs |
| Randy Spelling | boxers |
| Rick Springfield | both |
| Demetrious Starling | briefs |
| Seth Stevenson | boxer briefs |
| Jeff Stinco | briefs |
| Michael Stipe | boxers |
| Eddie Stone | briefs or commando |
| Matt Striker | boxer briefs |
| Matthew Sweet | briefs |
| Sam Talbot | "boxers, briefs and commando" |
| Rob Thomas | commando |
| Justin Timberlake | boxer briefs |
| Johnathan Togo | both |
| Stuart Townsend | "both, but usually boxers" |
| Connor Trinneer | boxers |
| Chris Trousdale | boxers |
| Ricky Ullman | boxers |
| Karl Urban | boxer briefs |
| Chase Utley | boxer briefs |
| James Van Der Beek | boxers |
| Casper Van Dien | both |
| Milo Ventimiglia | commando |
| Marcel Vigneron | everything except tighty whities |
| Brad Virata | briefs |
| Mark Wahlberg | boxers |
| Cash Warren | boxer briefs |
| Damon Wayans | boxers |
| Jimmy Wayne | boxers or briefs |
| Nick Wechsler | both - boxers or briefs |
| Johnny Weir | both |
| Michael Weiss | boxer briefs |
| Pete Wentz | boxer briefs |
| Bradley Whitford | boxers |
| Barry Williams | boxers |
| Pharrell Williams | boxers |
| Bruce Willis | boxer briefs |
| Rainn Wilson | boxer briefs |
| Jeff Wilson | boxer briefs |
| Peter Wingfield | commando |
| Robert Hewitt Wolfe | briefs |
| Elijah Wood | boxers |
| Bernard Yin | boxers |
| Vince Young | boxers |