NY- FUN-loving First Daughter Jenna Bush apparently lost her wallet at Lower East Side hotspot Happy Endings while fleeing from a would-be suitor.

The 23-year-old blonde is said to have left a billfold stuffed with $1,000 in cash and her University of Texas at Austin student ID card at the watering hole some time last week, reports Travis Poston, proprietor of Web site tbirdshow.com.

Poston, whose brand-new site features interviews with ZZ Top’s Billy Gibbons, rapper Method Man and Conan O’Brien bandleader Max Weinberg, was shooting footage at Happy Endings last Tuesday night when a twentysomething man approached him and showed him Bush’s ID.

The man said he ran into a tipsy Jenna at the bar a few nights before, and he began flirting with her. She rebuffed his advances and soon left.

“He said on camera that she left her wallet there and that he took $1,000 in cash from it,” Poston told PAGE SIX. “I have him showing me her ID on video. It’s crystal clear – it’s definitely her ID.” Poston says he is mulling whether or not to post the footage on his Web site.

A spokeswoman for First Lady Laura Bush, apprised of Poston’s account of Jenna’s apparently lost wallet, refused to say whether Jenna had been at Happy Endings and declined to make any other comment on the record.

If Poston is right, though, it wouldn’t be the first time that Jenna, who graduated from college with an English degree last year, has paid for a fun night out.

In May 2001, authorities accused then-19-year-old Jenna and twin sister Barbara of using fake IDs to buy margaritas at a Mexican restaurant in Austin.

One month before that, Jenna was charged with being a minor in possession of alcohol outside of a bar near the University of Texas campus.

Jenna was fined $600 for trying to use a false ID for her second underage drinking bust. She lost her driver’s license for 30 days and had to do community service and attend an alcohol-awareness class.