Leslie's lucky enough to have had her real-life kids with Judd Apatow as her on-screen kids in 'Knocked Up' and 'This Is 40,' but our favorite role of hers is '17 Again' where she plays Matthew Perry's wife and Michelle Trachtenberg's mom. Yup.
In 'Juno,' 'Hairspray,' 'Away We Go' and others, Allison has played the mom that we want to have, mostly because in most of her roles she's witty and hilarious and just plain awesome.
Yes, Blythe is the mother of Gwyneth Paltrow in real life, but on-screen she's a mama too in all the 'Meet the Parents' films, 'The Lucky One,' and others.
Diane has had some of the greatest on-screen daughters, from Mandy Moore in 'Because I Said So' to, most recently, Katherine Heigl in 'The Big Wedding.' And we CANNOT forget when she played mama Nina Banks in the 'Father of the Bride' films. Best. Movies. Ever.
And here's the other famous Diane, Diane Lane, who's had tons of famous on-screen kids but the best of the best is playing Clark Kent's mom in this summer's 'Man of Steel.' Excited.
Julianne played a new mom back in the 1995 film 'Nine Months,' but since then she's called famous stars such as Emma Stone and Josh Hutcherson her on-screen children. Not too shabby.
Clearly J.Lo's younger than most of the ladies in here, but Jennifer's a movie mom, too! She's had young kids in movies such as 'The Back-Up Plan,' 'What To Expect When You're Expecting' and more.
Obviously Jamie's best mom role was when she parented Lindsay Lohan in 'Freaky Friday' so none of of her movies need be mentioned. Nope.
'Forest Gump.' 'Mrs. Doubtfire.' Steel Magnolias.' If you saw those movies and don't want Sally to be your mom in real life, we don't know what to tell ya.
Susan is like, the epitome of movie mom, playing Jason Segel's mom in 'Jeff Who Lives at Home,' and, of course, Jena Malone's dying-of-cancer mom in 'Stepmom' from 1998. There are others too, of course, but those are definitely the best ones.
Click through our gallery to see our list of actresses who always play parents on-screen, from youngsters like Leslie Mann and Jennifer Lopez to seasoned vets like Julianne Moore and Diane Keaton. Then go hug your own mother because unlike these ladies, she is the real deal.