First lady Michelle Obama joined Twitter and celebrated her birthday this week.

Mrs. Obama's social media account was launched by the White House and she received a number of warm wishes as she turned 49 years old on Thursday.

"The @FLOTUS Office is now on @twitter & will post updates & pics. When it's her, she'll sign -mo. PS: RT to wish Mrs. Obama a #HappyBirthday," read her first tweet, written by her staff.

She can now be followed on Twitter account @FLOTUS, which appropriately stands for her title as the first lady of the United States.

She also received a few birthday greetings from members of Congress, including California Reps. Karen Bass, who tweeted from her @RepKarenBass account, "Wishing First Lady @MichelleObama a happy birthday today! She's an amazing example for women & young girls everywhere.pic.twitter.com/hSgcZeGW."

Her new account will be run by the first lady's White House staff but tweets sent personally by Michelle Obama will be tagged "-mo."

It appears as if many of her fans were eager to be one of the first to follow her, as the count went up to nearly 5,000 within the first half hour of its launch. The first lady has nearly 30,000 followers as of Thursday afternoon.

There already has been a Twitter account set up for the first lady as @MichelleObama. However, the account was run by the president's campaign and has been mostly inactive since President Obama won the re-election last November.

She now joins other White House figures on Twitter, such as her husband with his @BarackObama account, which has more than 25 million followers, and Vice President Joe Biden's @JoeBiden.

Expect to see pictures and updates from the first lady during the ceremonies surrounding her husband's second term inauguration on Jan. 21.

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Michelle Obama, Twitter, President Obama, Barack Obama, White House