Photo: Kate Beckinsale/Instagram

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Kate Beckinsalefound something odd on celebrity trainerGunnar Peterson‘s mirror — and used the opportunity to take a sizzling selfie.

TheUnderworldactress, 45, showed off her fabulous abs onInstagramin stomach-baring black and white exercise gear on Wednesday. She put her brunette hair up for a workout in Beverly Hills, California.

Beckinsale blamed the substance on the mirror onLeBron James‘ arrival in Los Angeles toplay for the Lakers. She jokingly captioned the snapshot, “This is the second time I’ve found ectoplasm on the bathroom mirrors in the gym ever since @gunnarfitness got all excited about working with @kingjames what can it mean.”

Repostingthe picture, Peterson cheekily replied, “Ironic (or not) that it is only found in the bathroom where your @shape magazine cover hangs. Everything happens for a reason @katebeckinsale. Long liveThe King.”

Joe Scarnici/Getty

Rolls Royce X Technogym At The Home Of Gunnar Peterson

Beckinsale opened up toSHAPEin the January/February 2017 issueabout her exercise mentality.

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“I start out absolutely dreading it, do an incredibly punishing workout, b— about it the whole time, and end up feeling 100 percent better when I leave,” she told the magazine. “Working out is basically nature’s antidepressant.”

Arthur Belebeau/SHAPE Magazine

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Those abs don’t come easy — her workout routine is intense. “I do circuit training interspersed with brutal cardio, such as crazy things on a nonmotorized treadmill. That part is torture,” she explained toShape. “But the thing I like about circuit training is that you’re never doing one thing for very long. You get to the point where you almost can’t bear it, and it changes to something else.”

source: people.com