Reese Witherspoon Wears Sexy Dress, Has "Blonde Moment" When David Letterman Jokes About Daughter Ava

The 39-year-old actress is promoting her newest movie, Hot Pursuit

By Corinne Heller May 06, 2015 8:57 PMTags

Reese Witherspoon is one hot mama! And still...(legally) blonde.

The 39-year-old actress, who can be seen in the new film Hot Pursuit, poked fun at herself after letting one of David Letterman's jokes fly straight over her head on The Late Show on Tuesday.

Looking gorgeous in a sexy, cleavage-baring, V-neck body-hugging royal blue knee-length sheath dress and strappy silver sandals, paired with plum lipstick, she chatted with him about her 15-year-old daughter Ava. Letterman showed a recent Instagram photo of the two of them that Witherspoon had shared last week.

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"Actually, coincidentally, she was born the first year I was on this show," the actress said.

"Well that's an interesting coincidence," Letterman replied, coughing.

"Oh my God, no, no, no!" Witherspoon said after two seconds, waving her hands. "No, no, no, no, no!"

"Yeah, yeah I got it now, I got it," she said. "I was having a blonde moment. I have a lot of them lately."

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Witherspoon made her debut on The Late Show in 1999, at age 22, when she was pregnant with her daughter, engaged to the child's dad Ryan Phillippe, and promoting Cruel Intentions, in which the two play love interests.

"I have a fiancé, I'm not married yet," she told Letterman at the time. "Hey, this is America, land of the free."

The actress married Phillippe in June 1999 and Ava was born the following September. The two are also parents to a son, Deacon, 11. Witherspoon and the actor divorced in 2007. She married talent agent Jim Toth in 2011 and the two are parents to a 2-year-old sonTennessee James Toth.