Is that a smile? McKayla Maroney joins Alyson Hannigan on How I Met Your Mother set

Is that a smile? McKayla Maroney joins Alyson Hannigan on How I Met Your Mother set Olympic gymnast McKayla Maroney became an overnight sensation when her 'not impressed' face went viral over the internet. And despite the medal winner's good humour about her new-found fame, it seems the 16-year-old is also keen to have fans see her in a more positive light. When the Fierce Five gymnast made a visit to the set of How I Met Your Mother today, she did her very best to smile as she was photographed with the hit comedy's star Alyson Hannigan. A bit more impressed: Actress Alyson Hannigan and gymnast McKayla Maroney today on the set of CBS comedy How I Met Your Mother Dressed in a glamorous plum dress, McKayla stood side-by-side with Alyson, who plays Lily Aldrin in the prime-time CBS show. With the Hollywood actress's arm around her, McKayla held her Olympic silver medal high - the same medal the gymnast first wore when she was photographed making her trademark pout. The 16-year-old won silver - and made her now famous 'not impressed' face - after an embarrassing tumble during her final vault routine at the London 2012 Games pushed her into second place. Alyson held McKayla's gold medal, meanwhile - the medal won by the U.S. Women's Gymnastic team - which is nicknamed the Fierce Five. Trying very hard: A little more practice and this smile might even look natural! Talking to her fans: McKayla is clearly attempting to show a different side of herself after the 'not impressed' meme went viral Posting the photograph on her Twitter account, Alyson wrote: 'It is a GOLDen day on the HIMYM set!!!' McKayla has also been busy tweeting pictures of her own this week. In stark contrast to the Not Impressed pics which comprise McKayla's Tumblr meme, the gymnast's own photographs show a glamorous and smiling teen. The famous pout: McKayla's show of disappointment after her vault tumble cost her gold is the look that has taken her fame above and beyond her Olympic skills The tumble that started the Tumblr: It was this awkward tumble that cost the 16-year-old champion gold in this year's Olympics, leading to the famous pout Looking stunning in a red dress, her hair blow dried and wearing make-up, McKayla makes sure to smile for the photos which she posted to her Twitter page on Tuesday. It seems the world-famous gymnast shows no signs of tempering contact with her fans, including tweeting glamorous photos of herself, in the wake of news that her parents are worried about her safety. Following the gymnast’s return to their Los Angeles home, McKayla's mother Erin Maroney, 47, told Mail Online: ‘It has been a bit frightening, we have had marriage proposals. My daughter is 16.’ The Fierce Five: McKayla, second from the left, with fellow members of the U.S. Women's Gymnastics team