Kaley Cuoco shows off her killer abs and looks super sexy in a Calvin Klein bra top

The single life looks good on Kaley Cuoco.

The 30-year-old Big Bang Theory star showed off her incredible physique on Instagram on Tuesday, rocking nothing but a Calvin Klein sports bra and ripped jean shorts. Kaley's promoting her upcoming appearance on Spike's Lip Sync Battle, which starts its second season on Jan. 7.

"That's right....it's coming....January 7th @spikelsb @llcoolj get ready..." Kaley wrote.

WATCH: Kaley Cuoco Sports Short Shorts on Night Out With Her Ex, Johnny Galecki

This, of course, isn't the first time we've gotten a good look at Kaley's super fit stomach. In July, she flaunted her lean figure after taking a yoga class in Studio City, California.

In September, the actress said she owes her incredible physique "100 percent to yoga."

"I love being toned and having muscle; it's so sexy and beautiful," she toldShape. "I go to a place called CorePower Yoga. One morning I'll take the Hot Power Fusion class, which is an amazing calorie burner. Or I'll take a Yoga Sculpt class, where we wear three-pound weights during yoga moves. The sculpt classes include 20 seconds of mountain climbing or jumping jacks between the poses, so I get cardio, too."

"I ride horses five days a week whenever I can," she added.

WATCH: Kaley Cuoco Goes Topless for 'Shape' Magazine, Reveals the Secret to Her Toned Body

In November, Kaley shared how she covered up her marriage tattoo to her now ex, Ryan Sweeting. The two announced their split in September, after nearly two years of marriage.

"Note to self -- do not mark your body with any future wedding dates," she joked.

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