If you stood all four of the Baldwin brothers side by side, most folks would be able to pick out Alec, but what about the other three? The other Baldwins are definitely harder to distinguish. Who’s the fat one (Daniel)? Which one showed his ass in that Sharon Stone movie about voyeurism (William)? And which one made a film with The Weasel about living in a bubble (Stephen)? In hopes of helping you get to the bottom of the brothers Baldwin, we’ve put together this handy little guide. Keep in mind there are also two Baldwin sisters, Jane and Beth, but since neither of them act, we haven’t included them here. And whatever you do, please be careful no to confuse the Baldwins below with these guys, these guys, or even these guys.

Baldwin: Alec
Age: 47
Worst Film: “The Cat in the Hat”
Highest Grossing Flick: “Pearl Harbor,” $199M
Fun fact: Actually had sex with Kim Basinger during their love scene in “The Getaway.”
Chest hair-o-meter: Robin Williams
Six Degrees of Kevin Bacon: 1. Was in “She’s Having a Baby” (1988) with Kevin Bacon.

Baldwin: Daniel a.k.a. The TV Baldwin
Years Younger Than Alec: 2
Worst Film: Tie: “Car 54 Where Are You?” and “Paparazzi”
Highest Grossing Flick: “Born on the Fourth of July,” $70M
Fun fact: Once overdosed on crack.
Chest hair-o-meter: Yet to go shirtless on celluloid.
Six Degrees of Kevin Bacon: 2. Was in “Paparazzi” (2004) with Fay Masterson who was in “We Married Margo” (2000) with Kevin Bacon.

Baldwin: William a.k.a. Billy
Years younger Than Alec: 5
Worst Film: “Sliver”
Highest Grossing Flick: “Backdraft,” $77.9M
Fun fact: Is married to Chynna Phillips of the terrible ’80s pop group Wilson Phillips.
Chest hair-o-meter: David Hasselhoff
Six degrees of Kevin Bacon: 1. He was in “Flatliners” (1990) with Kevin Bacon.

Baldwin: Stephen
Years Younger Than Alec: 7
Worst Film: “Bio-Dome”
Highest Grossing Flick: “Born of the Fourth of July,” $70M
Fun fact: Is a born-again Christian
Chest hair-o-meter: Ashton Kutcher
Six Degrees of Kevin Bacon: 2. Was in “Shelter Island” (2003) with Ally Sheedy who was in “She’s Having a Baby” (1988) with Kevin Bacon.

Baldwin: Joseph (ok, he’s a cousin)
Years Younger Than Alec: 12
Worst Film: “It Had to Be You”
Biggest Money Maker: This would require a theatrical release.
Fun Fact: His first acting role was on the soap “Guiding Light”
Chest hair-o-meter: Macauley Culkin.
Six Degrees of Kevin Bacon: Was in “It Had to Be You” (2000) with Faith Prince who was in “Picture Perfect” (1997) with Kevin Bacon.