It's not a bad birthday present for Jarrett. President-elect Barack Obama and his wife Michelle dropped by a celebration Friday night for their long-time friend and confidante.
The party was for her birthday, but no doubt she's also toasting the role she'll assume after the inauguration.
In a statement to ABC7, the former CTA chairwoman said, "I am deeply honored and humbled by the appointment and look forward to serving our great country. The best birthday present I could imagine."
A White House senior adviser can handle a range of duties. President George W. Bush's top political aide Karl Rove held the title in the current administration.Jarrett has a background in real estate and politics in Chicago.
The Associated Press contributed to this report.