Julia Louis-Dreyfus completes second round of chemotherapy

Oct. 20 (UPI) -- Julia Louis-Dreyfus shared on Instagram Thursday that she completed her second round of chemotherapy in her fight against breast cancer.

"Chemo #2: finito. We are NOT [expletive] around here," the Veep star wrote alongside a photo of herself wearing a disguise that included a hoodie, sunglasses and a fake mustache drawn above her upper lip.

"I've got the eye of the tiger. The Fighter dancing through the fire cuz I am a champion and your're going to hear me ROAR," Louis-Dreyfus continued in reference to Katy Perry's song "Roar" before she thanked the pop star and Veep co-stars Tony Hale and Timothy Simons for inspiring her.

"Thanks to @mrtonyhale & @timothycsimons & @katyperry for their hilarious and loving inspiration," the actress said.

Louis-Dreyfus first announced she was diagnosed with breast cancer in September. "1 in 8 women get breast cancer. Today, I'm the one," she wrote at the time. "The good news is that I have the most glorious group of supportive and caring friends, and fantastic insurance through my union. The bad news is that not all women are so lucky, so let's fight all cancers and make universal health care a reality."

Following the announcement, Louis-Dreyfus received support and words of encouragement from a number of celebrities including her Seinfeld co-star Jason Alexander, breast cancer survivors Robin Roberts and Christina Applegate and former Vice President Joe Biden.