TMZ.com Jennifer Lopez is doing a juggling act ... she celebrated the launch of her shoe collection in Bev Hills Saturday, as she and Ben Affleck are scrambling to buy a house before the end of the month because the financial consequences are HUGE. Gallery Launch Gallery Backgrid Lots of stars showed up to support JLo, including Tiffany Haddish , Hailey and Chloe Bailey . and others. The event was packed, and JLo mingled with them all ... with security, of course. Backgrid Ben was actually a no-show... he was at the premiere of his new flick, "AIR" at SXSW. Ben and Jen have been in and out of escrow on various houses, and now it's crunch time. There's a new law that takes effect in L.A. County April 1st, which imposes a tax on multi-million dollar estates, and the financial consequences are enormous. They're in escrow right now on a house in Pacific Palisades, but given their track … [Read more...] about Jennifer Lopez Has Party for Shoe Line As She and Ben Affleck Scramble to Buy a House