Lindsay Lohan's Birthday -- LiLo's All Cut & Bruised, But Made It To 28

Lindsay Lohan defied the odds -- she stayed alive long enough to hit 28, but still flashed some serious wear and tear for the big day. Sooo ... happy birthday?

Linds was spotted in NYC with multiple bruises on both legs ... and a serious gash on her left. Maybe she started the celebration early (like it ever stops).

After a rollercoaster year, and life, in and out of sobriety ... a lot of people had her pinned for the 27 Club -- aka the first club Lindsay didn't want to enter.

Infamously, rock legends Brian Jones, Jimi Hendrix, Janis Joplin, Jim Morrison, Kurt Cobain, and Amy Winehouse all died before their 28th birthdays.

Mazel, LiLo.