Christina Aguilera: Trousdale on Tuesday!

Christina Aguilera parties with pal Nicole Richie — not pictured — at Trousdale nightclub in West Hollywood on Tuesday (March 23).

The 29-year-old singer announced yesterday that she’s releasing a new single called “Not Myself Tonight” very soon!

The lyrics to “Not Myself Tonight” were posted on Xtina‘s site today – maybe we’ll get to hear the song tomorrow!

After a four-year wait, Bionic will be Christina‘s newest album released!

FYI: Christina is wearing a Riviera Stripe 3/4 Sleeve Cropped Tee by Michael Stars.