Lilly Moscovitz From "The Princess Diaries" Hasn't Changed In 21 Years, And 18 Other Rom-Com Best Friends Then Vs. Now

Here's what Didi Conn looked like as Frenchy (Sandy's best friend) in Grease (1978):

Here's what Didi Conn looks like today:

Didi Conn in 1978 vs. today:

Here's what Regina King looked like as Iesha (Justice's best friend) in Poetic Justice (1993):

Here's what Regina King looks like today:

Regina King in 1993 vs. today:

Here's what Alanna Ubach looked like as Serena (Elle's best friend) in Legally Blonde (2001):

Here's what Alanna Ubach looks like today:

Alanna Ubach in 2001 vs. today:

Here's what Heather Matarazzo looked like as Lilly Moscovitz (Mia's best friend) in The Princess Diaries (2001):

Here's what Heather Matarazzo looks like today:

Heather Matarazzo in 2001 vs. today:

Here's what Dulé Hill looked like as Preston (Zack's best friend) in She's All That (1999):

Here's what Dulé Hill looks like today:

Dulé Hill in 1999 vs. today:

Here's what Sandra Oh looked like as Patti (Frances's best friend) in Under the Tuscan Sun (2003):

Here's what Sandra Oh looks like today:

Sandra Oh in 2003 vs. today:

Here's what Yasiin Bey, formerly known as Mos Def, looked like as Cavi (Dre's best friend) in Brown Sugar (2002):

Here's what Yasiin Bey looks like today:

Yasiin Bey in 2002 vs. today:

Here's what Susan May Pratt looked like as Mandella (Kat's best friend) in 10 Things I Hate About You (1999):

Here's what Susan May Pratt looks like today:

Susan May Pratt in 1999 vs. today:

Here's what Donald Faison looked like as Murray Duvall (Cher's friend and Dionne's boyfriend) in Clueless (1995):

Here's what Donald Faison looks like today:

Donald Faison in 1995 vs. today:

Here's what Lisa Nicole Carson looked like as Josie (Nina's best friend) in Love Jones (1997):

Here's what Lisa Nicole Carson looks like today:

Lisa Nicole Carson in 1997 vs. today:

Here's what Wanda Sykes looked like as Ruby (Viola's best friend) in Monster-in-Law (2005):

Here's what Wanda Sykes looks like today:

Wanda Sykes in 2005 vs. today:

Here's what Judy Greer looked like as Penny (Mary's best friend) in The Wedding Planner (2001):

Here's what Judy Greer looked like as Lucy/Tom-Tom (Jenna's best friend) in 13 Going on 30 (2004):

And here's what Judy Greer looked like as Casey (Jane's best friend) in 27 Dresses (2008):

Here's what Judy Greer looks like today:

Judy Greer in 2001, 2004, and 2008 vs. today:

Here's what James Callis looked like as Tom (Bridget's best friend) in Bridget Jones's Diary (2001):

Here's what James Callis looks like today:

James Callis in 2001 vs. today:

Here's what Molly Shannon looked like as Eve (Sara's best friend) in Serendipity (2001):

Here's what Molly Shannon looks like today:

Molly Shannon in 2001 vs. today:

Here's what Rhys Ifans looked like as Spike (Will's best friend) in Notting Hill (1999):

Here's what Rhys Ifans looks like today:

Rhys Ifans in 1999 vs. today:

Here's what Ian Gomez looked like as Mike (Ian's best friend) in My Big Fat Greek Wedding (2002):

Here's what Ian Gomez looks like today:

Ian Gomez in 2002 vs. today:

Here's what Essence Atkins looked like as Kareenah (Eva's sister and best friend) in Deliver Us from Eva (2003):

Here's what Essence Atkins looks like today:

Essence Atkins in 2003 vs. today:

Here's what Rosie O'Donnell looked like as Becky (Annie's best friend) in Sleepless in Seattle (1993):

Here's what Rosie O'Donnell looks like today:

Rosie O'Donnell in 1993 vs. today:

And here's what Rupert Everett looked like as George Downes (Julianne's best friend) in My Best Friend's Wedding (1997):

Here's what Rupert Everett looks like today:

Rupert Everett in 1997 vs. today: