Good Genes or Good Docs

Christina Aguilera's is beautiful!

Here's an 18-year-old version of the New Year's Rockin' Eve headliner all dressed up in Los Angeles back in 1998 (left) and 20 years later ... The award-winning artist -- who turned 38-years-old just last week -- at an event in New York City earlier this year (right)!

What year is it?!

The question is ...

Michael Bublé's good looks are all we want this holiday season!

Here's a 28-year-old version of the singer that keeps the Christmas spirit alive at a signing in New York City back in 2003 (left) and 15 years later ... The now 43-year-old was showing off his winter scruff earlier this month in Germany (right).

Feeling good!

The question is ...

Lucy Liu is getting better with age!

Here's a 31-year-old version of the "Charlie's Angels" star beaming with beauty in New York City back in 1999 (left) and 19 years later ... the multitalented actress -- Who is celebrating her 50th birthday Sunday -- rocking a slick back look at an event earlier this year (right).

Fifty looks nifty on her.

The question is ...

The truth of Katherine Heigl's looks are anything but ugly!

Here's a 15-year-old version of the "Knocked Up" leading lady at a movie premiere in New York back in 1994 (left) and 24 years later ... the "Grey's Anatomy" actress -- who just celebrated her 40th birthday Saturday -- at a press conference this summer (right).

Age suits her well!

The question is ...

Jack Black has some rockin' good looks!

Here's a 31-year-old version of 'School of Rock' star at a movie premiere in Hollywood back in 2000 (left) and 18 years later ... the now 49-year-old 'Tenacious D' rocker -- and father of two -- was spotted showing off his scruff in Los Angeles earlier this month (right).

This is just a tribute!

The question is ...

Ryan Gosling's good looks are crazy, stupid, hot!

Here's a 21-year-old version of the 'The Notebook' star showing off his baby face at Sundance back in 2001 (left) and 17 years later ... Eva Mendes' baby daddy -- who turns 38 years old tomorrow -- at an event in Beverly Hills last week (right).

If he's a bird, I'm a bird.

The question is ...

Sarah Michelle Gellar's beauty is to die for!

Here's a 17-year-old version of the 'I Know What You Did Last Summer' scream queen at an event in NYC back in 1994 (left) and 24 years later ... The now 41-year-old mother of two was spotted showing off her scary good looks at a charity event earlier this year (right).

Looks that slay!

The question is ...

Judy Greer's looks are screamin' good!

Here's a 25-year-old version of the '13 Going On 30' actress at a movie premiere in California back in 2001 (left) and 17-years-later ... The 'Halloween' star was seen looking better than ever while at an event in Hollywood last week (right).

No tricks ... just treats!

The question is ...

Tom Hardy's good looks will drive you mad!

Here's a 25-year-old version of the "Star Trek" actor at the movie premiere in Hollywood back in 2002 (left) and 16 years later ... The villainous "Venom" star looking scruffy at a Marvel premiere last week. (right).

Speak of the devil and he should appear.

The question is ...

Naomi Watts's good looks belong on the big screen!

Here's a 29-year-old version of the "King Kong" actress, showing off her beautiful bob at a movie premiere in California back in 1998 (left) and 21 years later ... The darling mother-of-two -- who recently celebrated her 50th birthday - at a fashion event in New York City earlier this month (right).

That's Watts up!

The question is ...

Lil Wayne's good looks are hard to rap your head around.

Here's a 17 year old version of the southern hip-hop star hanging out with the Hot Boys in Las Vegas back in 1999 (left) and 19 years later ... the skateboarding music mogul -- who celebrated his 36th birthday earlier this week -- at the release party for "Tha Carter V" in Los Angeles last week (right).

He is not a human being.

The question is ...

Olivia Wilde's good looks are getting better in time!

Here's a 19-year-old version of the "House" actress exuding youth back in 2003 (left) and 15 years later ... The now 34-year-old mother of two was spotted looking timeless at the movie premiere for her new film "Life Itself" earlier this week (right).

Wildly beautiful.

The question is ...

Amy Poehler's good looks are truly worthy of the big screen!

Here's a 30-year-old version of the former "Saturday Night Live" cast member at a party in New York City back in 2001 (left) and 17 years later ... The "Mean Girls" actress -- who's celebrating her 47th birthday this weekend -- was looking like a cool mom in Beverly Hills last month (right).

Lookin' grool!

The question is ...

Terry Bradshaw's good looks are legendary!

Here's a 24-year-old version of the NFL Hall Of Fame player on the sidelines before a game back in 1972 (left) and 46 years later ... The quarterback turned sports analyst -- Who recently celebrated his 70th birthday -- speaking on a radio show earlier this year (right).

Going long!

The question is ...

Chris Pine's good looks are out of this universe!

Here's a 24-year-old version of the "Star Trek" star at an event in Beverly Hills back in 2004 (left) and 14 years later ... The "Wonder Woman" actor -- who just turned 38 this past week -- at ComicCon in San Diego, CA last month (right).

Wonderful sight to see!

The question is ...

Michelle Yeoh has some crazy good looks!

Here's a 35-year old version of the "Tomorrow Never Dies" actress showing off her long locks at a premiere in Los Angeles back in 1998 (left) and 20 years later ... The now 56-year-old "Crazy Rich Asians" star looking like a sheared beauty at an event in New York City earlier this month (right).

She's marriage material.

The question is ...