Julia Roberts
Julia Roberts will headline and produce “Today Will Be Different” on HBO. Pictured: Roberts at the red carpet screening for “Money Monster” at the 69th Cannes Film Festival in Cannes, France on May 12, 2016. Reuters/Regis Duvignau

Julia Roberts has just been cast in HBO’s upcoming limited TV series, “Today Will Be Different.”

The series will be adapted from the bestselling novel written by Maria Semple. “Today Will Be Different” takes place in one day and will focus on Eleanor Flood (Roberts), a woman who will wake up feeling determined to be her best self that day. However, her desire to make life meaningful will become difficult with all of the unpredictable things that will be thrown her way. Semple will be writing the script, while Roberts will executive produce the series.

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According to TV Line, the pay-cable network may have just found its new “Big Little Lies.” Similar to “Today Will Be Different,” the series was adapted from a book, which was written by author Liane Moriarty. In addition, “Big Little Lies” was also dubbed a limited series by HBO and starred A-list actors such as Nicole Kidman, Reese Witherspoon and Shailene Woodley.

As of late, there are rumors that HBO and Moriarty will team up for “Big Little Lies” Season 2, but the network hasn’t made an official announcement yet. Kidman and Witherspoon both produced Season 1, and if Season 2 will be a go, the co-stars will also be producing Season 2.

On her Instagram account, Witherspoon hinted on the possibility of a renewal by posting a photo of herself, Kidman and Laura Dern. She wrote a cryptic caption saying that all three women are ready to come up with new lies.

Meanwhile, “Today Will Be Different” will mark Roberts’ return to HBO in three years. In 2014, she headlined the TV movie project “The Normal Heart.” In the show, Roberts played the role of Dr. Emma Brookner, and her portrayal earned her an Emmy nomination.

Prior to its release, Roberts spoke with E! News to explain why she thinks it’s important for everyone to watch “The Normal Heart.” “I want people that are my generation to see it to remember and people that are your generation to see it and be educated. The balance of it is really important,” she said.

The TV movie chronicled the AIDS epidemic in the United States in the 1980s.