Reese Witherspoon is in celebration mode as her children finally go back to school, allowing her to have some time alone.

The 45-year-old actress took to Instagram Wednesday to share a video of herself dancing to pop duo Junior Senior's 2002 hit "Move Your Feet."

Wearing a yellow jumpsuit, the actress danced in the kitchen while filling her mug with coffee and then grabbing some cake from the counter.

"When the kids go back to school and you have the house to yourself," Witherspoon captioned the post, which has so far garnered more than 400,000 likes.

Fellow celebrities took to the comments section to share their reactions to the celebratory video.

"Ocean's 8" star Awkwafina commented, "I love you."

Comedian Chelsea Handler wrote, "This reminds me of your dance scene in This Means War. But, without trying to have sex."

"Yelling to the Sky" actress Victoria Mahoney praised Witherspoon for taking "cool" shots from the top angle, writing, "cool OVERHEAD SHOT & _ luv how you palmed that _ !"

Author Nathan Turner noted, "HAHAHAH that cake grab!"

Meanwhile, fashion designer Monique Lhuillier expressed her excitement for her own children to also return to school. "Counting the days for mine to go back," she wrote.

Witherspoon is mom to three children -- Ava, 21, Deacon, 17 and Tennessee, 8. She shares Ava and Deacon with her ex-husband Ryan Phillippe while she shares Tennessee with her husband Jim Toth.

The actress tied the knot with Toth in 2011 after she ended her 11 years of marriage with Phillippe in 2008.

In June, Witherspoon opened up about her relationship with her adult kids and noted that it makes her quite emotional.

"That makes me want to cry, the idea of having a long relationship with adult children," she told Interview Magazine. "I never expected the kind of relationship that I have with them, but it's so rewarding to be able to have kids that you can process life with a little bit, and they help me understand the complexities of what it means to be a human now."

On the work front, Witherspoon will be next seen in the movie "Your Place or Mine," which is directed by Aline Brosh McKenna.

The hunt for images of US actress Reese Witherspoon continues to draw Los Angeles paparazzi out onto the streets
The hunt for images of US actress Reese Witherspoon continues to draw Los Angeles paparazzi out onto the streets AFP / Jean-Baptiste Lacroix