Sacha Baron Cohen turns 38 today. Ashanti is turning 29. Paul Simon is 68. Kelly Preston is turning 47. Kate Walsh of Grey's Anatomy and Private Practice is 42. Model Beverly Johnson is 57. Ivan Bart, the head of IMG Models, is turning 46. Billionaire Tom Tisch turns 55. Mega art dealer William Acquavella is 72. Sammy Hagar of Van Halen is 62. Access Hollywood's Billy Bush is turning 38. George Bush's former spokesman, Ari Fleischer, is 49. Marie Osmond is 50. Retired NFL star Jerry Rice is 47. Serena Altschul, the former MTV VJ and CBS News correspondent, is 39. Margaret Thatcher is 84. And Donald Trump's least famous child, Tiffany Trump, celebrates her 16th birthday today.

Free Arts NYC hosted its 10th annual art and photography auction last night. Attendees at the Calvin Klein Collection-sponsored event, which was hosted by Kevin Bacon and Michelle Monaghan, included Calvin Klein's Francisco Costa and Italo Zucchelli, Amy Sacco, Glenda Bailey, Julia Restoin Roitfeld, Hilary Rhoda, Ed Westwick, Lindsay Price, Karolina Kurkova, Yvonne Force Villareal, Zani Gugelmann, Kimberly Guilfoyle and Eric Villency, Thom Browne, Molly Sims, Andrew Saffir, Beth Ostrosky, Erin Fetherston, Mary Alice Stephenson, David Granger, Helen Lee Schifter, Glenn O'Brien, Kate Schelter, Richard Chai, Jeremy Kost, Mickey Boardman, Kathryn Neale, Ross Bleckner, Simon de Pury, and Andrew Fry. [PMc, Wireimage, FWD, SF]

Cartier celebrated its 100th anniversary in New York last night with a big bash inside its Fifth Avenue store. The celeb-heavy crowd included Elton John, Kate Hudson, Jessica Biel and Justin Timberlake, Anne Hathaway, Rachel Weisz, Demi Moore, Eva Mendez, Ashley Olsen, Zac Posen, Martha Stewart, Graydon Carter, Jeff Zucker, Robbie Myers, Patti Smith, Russell Simmons and Julie Henderson, Tory Burch, Thakoon Panichgul, Erin Fetherston, Nanette Lepore, Phillip Lim, Coco Rocha, Hilary Rhoda, Daniel Boulud, Eli Weisel, Bruce Weber, Henrik Lundqvist, Ingrid Sischy, Beth Rudin DeWoody, Cornelia Guest, Susan Fales-Hill, Marjorie Gubelmann, Thora Birch, Chiara Clemente, Alexis Bryan, Dylan Lauren, Kelly Klein, and Cartier chief Frederic De Narp. [PMc, Wireimage, WWD]

• The scandal-ridden State Liquor Authority has a new chairman. [NYO]
• Atria, which opened four months ago in the ex-Grayz space, is gone. [Eater]
• More Marea buzz: A peek at some of the dishes Chris Cannon and chef Michael White plans to have on the menu when it opens. [WSJ]
• Amy Sacco, Ivan Bart, Julia Restoin Roitfeld and Sophia Hesketh are hosting tonight's grand opening of the Griffin in the old P.M. space. [P6]
• Baja Fresh isn't opening May 11. More like May 19. [Eater]

Tiffany Trump, the Donald's fourth child and the only member of the immediate family who shares his hair color, turns 15 today. Also celebrating: Sacha Baron Cohen is 37. Ashanti is 28. Paul Simon turns 67. Kelly Preston is 46. Van Halen's Sammy Hagar turns 61. George Bush's cousin, Access Hollywood's Billy Bush, is 37. George Bush's former spokesman, Ari Fleischer, is 48. Modeling legend Beverly Johnson is turning 56. Modeling honcho Ivan Bart is 45. Art dealer William Acquavella is 71. And billionaire heir Thomas Tisch is 54.

Just when you thought there couldn't possibly be any more useful analysis to be applied to the subject of tattoos' increasingly mainstream popularity, the Times points out that not only are lots of non-punky, non-prisony people getting inked, they're getting tattoos on the neck and hands. This is despite the fact that such visible markings may very well rule out ever working in certain jobs, especially as courts never agree that it's discriminatory for employers to forbid tattoos and other body modifications.

IMG Models exec Ivan Bart controls the careers of some of the world's most highly paid mannequins.