Credit: Michael Simon/

For a body that has endured bearing three children, Tori Spelling's is looking pretty impressive!

In L.A. on Monday, the 39-year-old, who is pregnant with baby No. 4, showed off her growing bump in a sexy, black crocheted monokini that left almost nothing to the imagination and Sanuk yoga mat sandals.

The Tori & Dean star enjoyed some R&R in the gorgeous Memorial Day weather with her 7-month-old daughter, Hattie, and husband Dean McDermott, 45. (The pair, who have been married for six years, are also parents to Liam, 5, and Stella, 3.)

In late March, the Beverly Hills, 90210 alum confirmed her surprise pregnancy, which came just five months after she gave birth to Hattie. The following month, Spelling told Rachael Ray that she hopes baby No. 4 is a boy.

"We would like a little boy, and Stella…she's now a middle child and when we told her about the pregnancy she said 'I hope it's a little boy for Liam,'" Spelling told the Rachael Ray Show host.