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Neil Patrick Harris' Twins Turn 1

Neil Patrick Harris Twins

First Posted: 10/12/11 06:42 PM ET Updated: 12/12/11 05:12 AM ET

Happy birthday, Harper Grace and Gideon Scott!

Neil Patrick Harris and David Burtka's twins celebrated their first birthday Wednesday and the "How I Met Your Mother" star tweeted a shout-out to his adorable kids and partner.

"Things I dig: our twins Gideon and Harper, who are one year old today! They are glorious. So proud to be their Papa," he wrote, adding, "And I'm in awe of, and so grateful for, @davidburtka. He is, in my humble opinion, the greatest dad in the history of ever."

Harris and Burtka announced they were expecting twins via surrogate in August 2010 over Twitter, and then shared the news of their birth last October.

"Babies!! On 10/12, Gideon Scott and Harper Grace entered the Burtka-Harris fold. All of us are happy, healthy, tired, and a little pukey," Harris tweeted.

Since then, we've seen tidbits of Harris, Burtka and the twins -- including photos of the family hanging out with Elton John on his yacht -- but our favorite photos of the twins come from Harris' appearance on "Late Show With David Letterman," where he showed off holiday-themed photos of the kiddos.

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  • Gwen Stefani takes her boys, Kingston and Zuma, to the London Zoo. (FilmMagic)

  • Kendra Wilkinson's cute little man, Hank Jr., had a fun day out with his famous mom and dad for a playdate in the park.

  • Hugh Jackman takes his daughter Ava for a dip while he and his family vacation in St. Tropez, France on July 30th.

  • Sandra Bullock steps out with her little guy Louis for a day out in Los Angeles, California.

  • Reese Witherspoon enjoyed a stroll on the beach with her daughter Ava and some friends during a Fourth of July party in Malibu, California.

  • It was a family affair at the Fourth of July parade in the Pacific Palisades area of Los Angeles. Ben Affleck and wife Jennifer Garner took their adorable little ladies, Violet, 5, and her younger sister Seraphina, 2, to show their red, white and blue pride on July 4th.

  • Pink and husband Carey Hart enjoy enjoy a beautiful beach day in Malibu, CA with new baby Willow on July 2nd.

  • Jennifer Lopez takes her twins, Emme and Max to the Parc Monceau in Paris, France where they played on the carousel and swings.

  • Heidi Klum spends a fun filled day with daughters Leni and Lou at a park in the Tribeca section of New York City.

  • Halle Berry wears a blue dress over her bikini as she takes her daughter Nahla shopping for groceries at Bristol Farms.

  • Ellen Pompeo holds on tight to her daughter Stella during a drink break from their play date in New York City on June 29th.

  • Bethenny Frankel strolls with her husband Jason Hoppy and their daughter Bryn through the West Village in New York City.

  • Rachel Zoe and her husband Rodger Berman show off their brand new son Skyler Morrison at the "InStyle's Dinner With A Designer" for Rachel Zoe at Soho House in West Hollywood, California.

  • Ashlee Simpson shows off her stylish side in a mini skirt and hat as she carries her son Bronx through Studio City in Los Angeles.

  • Courteney Cox takes her little lady, Coco and a friend, for an ice cream break in Malibu on May 25th.

  • Alanis Morissette leaves her home in Los Angeles, California on May 2nd with her hubby Mario and their 4-month-old son Ever.

  • Gwen Stefani heads out to Primrose Hill giving her son Zuma a push in the stroller on May 3rd in London, England.

  • Jennifer Garner makes her way out actor Adam Sandler'­s home with Seraphina who holds on to a balloon and has a painted face.

  • Katie Holmes and Suri spent a little time in the hotel pool yon May 15th and it looks like Holmes was trying to teach her little lady how to swim.

  • Rebecca Gayheart goes for a ride with daughter Billie Beatrice, spending a fun filled mother daughter day at the park in Los Angeles.

  • Mark Wahlberg and wife Rhea Durham take little Michael Wahlberg out shopping in Los Angeles on June 2nd.

  • Gavin Rossdale chases after son Zuma on the beaches in Malibu. He and Gwen Stefani spent their Memorial Day with their boys having some fun in the sun.

  • Rebecca Gayheart shops with darling daughter, Billie Beatrice in Los Angeles on June 12th.

  • Halle Berry takes an after school walk with daughter Nahla Aubrey in Los Angeles, CA on June 22nd. The little overall clad artist colored her mom a picture and carried a pink cartoon backpack!

  • Little Zuma Rossdale showed his American spirit as he dressed up in a Captain America costume while on a Ralphs run with his nanny in Los Angeles.

  • Violet Affleck is ready for the 4th of July as she sports some red and white stripes during a playdate with mom, Jennifer Garner, and a friend.

  • Nicole Kidman was all smiles as she arrived in Sydney, Australia holding hands with daughter Sunday Rose & and baby Faith in her arms.

  • Halle Berry is a proud mommy as her daughter Nahla makes her way across the monkey bars at a local park.

  • Jennifer Garner gives her youngest daughter Seraphina a lift while out shopping on June 27th.

  • Angelina Jolie exits Grauman's Chinese Theatre after the "Kung Fu Panda 2" premiere on May 22nd, holding the hands of two of her six kids, Shiloh and Maddox.

  • John Travolta steps out with his little man, Benjamin.

  • Marcia Cross takes her twin girls, Eden and Savannah to the Santa Monica Pier where they had a blast riding the rides on May 18th.

  • What a fashionable mommy/daughter team! Milla Jovovich daughter Ever are spotted at LAX on their way to Paris on June 20th.

  • Rebecca Gayheart spent the day in the park with hubby Eric Dane and their daughter Billie in Hollywood.

  • Tiffani Amber Thiessen takes chubby cheeked baby girl, Harper Renn for a walk in New York on June 1st.

  • Usher grabs the hand of his little mini me, son Raymond V, as the pair leave a vegetarian restaurant on June 1st.

  • Ellen Pompeo pushes her sweet little girl Stella on the swings, when the mommy-daughter duo stopped at a local playground in New York City.

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Filed by Kelly Fisher  |