'Little Couple's' Jen Arnold shares bald chemotherapy photo, cancer treatment update

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Jen Arnold, star of TLC's "The Little Couple," is undergoing chemotherapy for a rare type of cancer ... but she's staying positive throughout the treatment.

Arnold tweeted an update on her chemo on Friday (Dec. 27) after it was pushed back from before Christmas due to "low counts [which made meds] not safe to give."

The smiling pic that showcases Dr. Jen's newly bald head goes hand-in-hand with her outlook on her treatment. Arnold found a "silver lining" in the postponement: having "a better Xmas" with husband Bill Klein, their recently-adopted 2-year-old daughter, Zoe, and 3-year-old son, Will. "How could I not enjoy ... First one with the kids," Arnold says. "Not letting #cancer ruin our #Christmas."

TLC will continue filming as Arnold undergoes treatment, and hopefully her positive attitude will have a positive effect on her health.

Photo/Video credit: Twitter