Pussycats at play

Melody, Kimberly, Nicole (above), Ashley, and Jessica are very busy tonight. After they open for Ms. Spears at the TD Banknorth Garden, the Pussycat Dolls will host The Estate's Second Anniversary Party. Sorry, feline followers, the quintet isn't scheduled to sing - the kitties need to rest their vocal cords - but they will hang out, dance, and mingle with fans. We've been told that the ladies will arrive around 11 p.m. wearing leather and lace, so be sure to find a good view in the two-story venue - the wrap-around balcony might be the purrfect spot for pussycat watching. 9 p.m. doors. $20. 21+. The Estate, 1 Boylston Place, Boston. 617-351-7000. www.theestateboston.com