Playing a spy Keri Russell is used to pretending to be in some dangerous situations.
However, on Wednesday the actress was involved in some risky business of her own as she promoted the third season of her show The Americans in New York.
Being brave while looking beautiful, the 38-year-old wore what appeared to be a rather conservative outfit at first glance of a lace long sleeve top and dark jeans.
Scroll down for video
Risky business: Keri Russell wore a sheer top to promote The Americans in New York on Wednesday
However, just like her undercover KGB spy character, there was more than meets the eye with the Felicity star's ensemble.
Keri's long sleeve black lace top was in fact completely sheer and she wore it without anything underneath.
Miraculously while her bust was clearly visible, somehow the lace fell perfectly to avoid the actress from having a nip slip.
Careful there: Keri's long sleeve black lace top was in fact completely see-through and she wore it without anything underneath but she somehow avoided showing off more than she bargained for
Low key and lovely: The Dark Skies star's hair was styled to look very natural with a slightly off centre part and loose waves
The top combined with her low key approach to makeup and styling created a very understatedly sexy but still glamorous look.
For the promotional evening, Keri went without much makeup at all with just her lips and eyebrows defined and the rest her skin made to look makeup-free.
The Dark Skies star's hair was also styled to look very natural with a slightly off centre part and loose waves.
Keeping it fresh: For the promotional evening, Keri went without much makeup at all with just her lips and eyebrows defined and the rest her skin made to look makeup-free
The star seemed in a great mood smiling and occasionally breaking into the giggles as photographers snapped away.
Her good mood may be because her work on The Americans is a mix of business and pleasure.
On the FX show, she plays Elizabeth Jennings a KGB spy who lives in America in an arraigned marriage with fellow spy Philip - played by Matthew Rhys - posing as Americans in suburban Washington, D.C., shortly after Ronald Reagan is elected president.
In real life, Keri and Matthew are dating, and have been since April last year following the actress' split from husband Shane Deary.
Secret mission: On the FX show, she plays Elizabeth Jennings a KGB spy who lives in America in an arraigned marriage with fellow spy Philip - played by Matthew Rhys - posing as Americans in suburban Washington, D.C., shortly after Ronald Reagan is elected president
ncG1vNJzZmivp6x7pa3IpbCmmZmhe6S7ja6iaKymqLWww8GisWiZoqm2pLjEZmlybWBug3N7qp6pomWCqsC0sculZJuqkauytHnPqKuepqSerq151pqpnaqfl7JuucClna6mk6m2sLqMrJ%2BenaJiuaKvxGanq6edpMGmv4x6pJ6qmZiur7%2BNoaumpA%3D%3D