AceShowbiz -

Kate Hudson once bared her derriere on Instagram to catch Nick Jonas attention, a source tells Us Weekly. According to the source, the 36-year-old actress had her stylist Sophie Lopez posted a photo of her naked in a bathtub back in November.

"#JustAnotherDayAtTheOffice," Sophie wrote alongside the sexy shot of Kate soaking in bubble bath with her naked back in full display. "Omg! You're so fired! #Fabletics," the "Almost Famous" actress commented on the picture. The photo was reportedly posted after Nick cooled things off with Kate.

Kate and Nick reportedly started hooking up in September after being introduced by her brother Oliver Hudson, who was Nick's co-star on "Scream Queens". A source said, "Their connection took off. Things just sparked."

The couple was first spotted together at Disneyland in late September. They later partied together in New York City. "They were dancing very close," an eyewitness told the site at the time. "It looked like a romantic date for the two of them."

Kate and Nick, however, are now cooling things off. According to the insider, "they are both just having fun. She's just seeing this as a fun hookup thing for now." They were last seen together in Mammoth Lakes, California earlier this month.